77430867844532 has 6 divisors (see below), whose sum is σ = 135504018727938. Its totient is φ = 38715433922264.

The previous prime is 77430867844511. The next prime is 77430867844567. The reversal of 77430867844532 is 23544876803477.

It can be written as a sum of positive squares in only one way, i.e., 41219430295696 + 36211437548836 = 6420236^2 + 6017594^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9678858480563 + ... + 9678858480570.

It is an arithmetic number, because the mean of its divisors is an integer number (22584003121323).

Almost surely, 2^{77430867844532} is an apocalyptic number.

It is an amenable number.

77430867844532 is a deficient number, since it is larger than the sum of its proper divisors (58073150883406).

77430867844532 is a wasteful number, since it uses less digits than its factorization.

77430867844532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19357716961137 (or 19357716961135 counting only the distinct ones).

The product of its (nonzero) digits is 758661120, while the sum is 68.

The spelling of 77430867844532 in words is "seventy-seven trillion, four hundred thirty billion, eight hundred sixty-seven million, eight hundred forty-four thousand, five hundred thirty-two".