78379761059 has 4 divisors (see below), whose sum is σ = 80908140480. Its totient is φ = 75851381640.

The previous prime is 78379761029. The next prime is 78379761073. The reversal of 78379761059 is 95016797387.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-78379761059 is a prime.

It is a super-2 number, since 2×78379761059² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 78379760992 and 78379761010.

It is not an unprimeable number, because it can be changed into a prime (78379761029) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1264189664 + ... + 1264189725.

It is an arithmetic number, because the mean of its divisors is an integer number (20227035120).

Almost surely, 2^78379761059 is an apocalyptic number.

78379761059 is a deficient number, since it is larger than the sum of its proper divisors (2528379421).

78379761059 is a wasteful number, since it uses less digits than its factorization.

78379761059 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2528379420.

The product of its (nonzero) digits is 20003760, while the sum is 62.

The spelling of 78379761059 in words is "seventy-eight billion, three hundred seventy-nine million, seven hundred sixty-one thousand, fifty-nine".