783434434387 has 12 divisors (see below), whose sum is σ = 871505487720. Its totient is φ = 703632232160.

The previous prime is 783434434379. The next prime is 783434434427.

It is a happy number.

783434434387 is nontrivially palindromic in base 10.

783434434387 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 783434434387 - 2³ = 783434434379 is a prime.

It is a super-2 number, since 2×783434434387² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (783434434787) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 38993962 + ... + 39014047.

It is an arithmetic number, because the mean of its divisors is an integer number (72625457310).

Almost surely, 2^783434434387 is an apocalyptic number.

783434434387 is a deficient number, since it is larger than the sum of its proper divisors (88071053333).

783434434387 is a wasteful number, since it uses less digits than its factorization.

783434434387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78008114 (or 78008103 counting only the distinct ones).

The product of its digits is 65028096, while the sum is 58.

The spelling of 783434434387 in words is "seven hundred eighty-three billion, four hundred thirty-four million, four hundred thirty-four thousand, three hundred eighty-seven".