77066106165536 has 12 divisors (see below), whose sum is σ = 151723896513462. Its totient is φ = 38533053082752.

The previous prime is 77066106165533. The next prime is 77066106165553. The reversal of 77066106165536 is 63556160166077.

It can be written as a sum of positive squares in only one way, i.e., 45400051057936 + 31666055107600 = 6737956^2 + 5627260^2 .

It is not an unprimeable number, because it can be changed into a prime (77066106165533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1204157908805 + ... + 1204157908868.

Almost surely, 2^{77066106165536} is an apocalyptic number.

It is an amenable number.

77066106165536 is a deficient number, since it is larger than the sum of its proper divisors (74657790347926).

77066106165536 is a wasteful number, since it uses less digits than its factorization.

77066106165536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2408315817683 (or 2408315817675 counting only the distinct ones).

The product of its (nonzero) digits is 28576800, while the sum is 59.

The spelling of 77066106165536 in words is "seventy-seven trillion, sixty-six billion, one hundred six million, one hundred sixty-five thousand, five hundred thirty-six".