77449465318 has 16 divisors (see below), whose sum is σ = 118742999760. Its totient is φ = 37875129376.

The previous prime is 77449465231. The next prime is 77449465321. The reversal of 77449465318 is 81356494477.

It is a happy number.

It is a super-2 number, since 2×77449465318² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1642621 + ... + 1689112.

It is an arithmetic number, because the mean of its divisors is an integer number (7421437485).

Almost surely, 2^77449465318 is an apocalyptic number.

77449465318 is a deficient number, since it is larger than the sum of its proper divisors (41293534442).

77449465318 is a wasteful number, since it uses less digits than its factorization.

77449465318 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3331991.

The product of its digits is 20321280, while the sum is 58.

The spelling of 77449465318 in words is "seventy-seven billion, four hundred forty-nine million, four hundred sixty-five thousand, three hundred eighteen".