77757512154632 has 8 divisors (see below), whose sum is σ = 145795335289950. Its totient is φ = 38878756077312.

The previous prime is 77757512154613. The next prime is 77757512154697. The reversal of 77757512154632 is 23645121575777.

It can be written as a sum of positive squares in only one way, i.e., 45196496991556 + 32561015163076 = 6722834^2 + 5706226^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4859844509657 + ... + 4859844509672.

Almost surely, 2^{77757512154632} is an apocalyptic number.

It is an amenable number.

77757512154632 is a deficient number, since it is larger than the sum of its proper divisors (68037823135318).

77757512154632 is a wasteful number, since it uses less digits than its factorization.

77757512154632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9719689019335 (or 9719689019331 counting only the distinct ones).

The product of its digits is 86436000, while the sum is 62.

The spelling of 77757512154632 in words is "seventy-seven trillion, seven hundred fifty-seven billion, five hundred twelve million, one hundred fifty-four thousand, six hundred thirty-two".