77030436005 has 4 divisors (see below), whose sum is σ = 92436523212. Its totient is φ = 61624348800.

The previous prime is 77030436001. The next prime is 77030436017. The reversal of 77030436005 is 50063403077.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 7973954209 + 69056481796 = 89297^2 + 262786^2 .

It is not a de Polignac number, because 77030436005 - 2² = 77030436001 is a prime.

It is a super-2 number, since 2×77030436005² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77030436001) 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, 7703043596 + ... + 7703043605.

It is an arithmetic number, because the mean of its divisors is an integer number (23109130803).

Almost surely, 2^77030436005 is an apocalyptic number.

It is an amenable number.

77030436005 is a deficient number, since it is larger than the sum of its proper divisors (15406087207).

77030436005 is a wasteful number, since it uses less digits than its factorization.

77030436005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15406087206.

The product of its (nonzero) digits is 52920, while the sum is 35.

The spelling of 77030436005 in words is "seventy-seven billion, thirty million, four hundred thirty-six thousand, five".