79540362788 has 6 divisors (see below), whose sum is σ = 139195634886. Its totient is φ = 39770181392.

The previous prime is 79540362787. The next prime is 79540362821. The reversal of 79540362788 is 88726304597.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 58994580544 + 20545782244 = 242888^2 + 143338^2 .

It is not an unprimeable number, because it can be changed into a prime (79540362787) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9942545345 + ... + 9942545352.

It is an arithmetic number, because the mean of its divisors is an integer number (23199272481).

Almost surely, 2^79540362788 is an apocalyptic number.

It is an amenable number.

79540362788 is a deficient number, since it is larger than the sum of its proper divisors (59655272098).

79540362788 is a wasteful number, since it uses less digits than its factorization.

79540362788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19885090701 (or 19885090699 counting only the distinct ones).

The product of its (nonzero) digits is 20321280, while the sum is 59.

The spelling of 79540362788 in words is "seventy-nine billion, five hundred forty million, three hundred sixty-two thousand, seven hundred eighty-eight".