77253836465 has 16 divisors (see below), whose sum is σ = 104176412928. Its totient is φ = 54568595136.

The previous prime is 77253836447. The next prime is 77253836501. The reversal of 77253836465 is 56463835277.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-77253836465 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 77253836465.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25835909 + ... + 25838898.

It is an arithmetic number, because the mean of its divisors is an integer number (6511025808).

Almost surely, 2^77253836465 is an apocalyptic number.

It is an amenable number.

77253836465 is a deficient number, since it is larger than the sum of its proper divisors (26922576463).

77253836465 is a wasteful number, since it uses less digits than its factorization.

77253836465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51674848.

The product of its digits is 25401600, while the sum is 56.

The spelling of 77253836465 in words is "seventy-seven billion, two hundred fifty-three million, eight hundred thirty-six thousand, four hundred sixty-five".