77694017018 has 16 divisors (see below), whose sum is σ = 117023284224. Its totient is φ = 38686478400.

The previous prime is 77694016979. The next prime is 77694017033. The reversal of 77694017018 is 81071049677.

It is a super-2 number, since 2×77694017018² (a number of 23 digits) contains 22 as substring.

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, 651746 + ... + 761682.

It is an arithmetic number, because the mean of its divisors is an integer number (7313955264).

Almost surely, 2^77694017018 is an apocalyptic number.

77694017018 is a deficient number, since it is larger than the sum of its proper divisors (39329267206).

77694017018 is a wasteful number, since it uses less digits than its factorization.

77694017018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111397.

The product of its (nonzero) digits is 592704, while the sum is 50.

The spelling of 77694017018 in words is "seventy-seven billion, six hundred ninety-four million, seventeen thousand, eighteen".