88781815508316 has 72 divisors (see below), whose sum is σ = 241039269570960. Its totient is φ = 25359911313408.

The previous prime is 88781815508263. The next prime is 88781815508333. The reversal of 88781815508316 is 61380551818788.

It is a Smith number, since the sum of its digits (69) coincides with the sum of the digits of its prime factors.

It is a congruent number.

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 in 23 ways as a sum of consecutive naturals, for example, 16452901 + ... + 21172188.

It is an arithmetic number, because the mean of its divisors is an integer number (3347767632930).

Almost surely, 2^{88781815508316} is an apocalyptic number.

It is an amenable number.

88781815508316 is an abundant number, since it is smaller than the sum of its proper divisors (152257454062644).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

88781815508316 is a wasteful number, since it uses less digits than its factorization.

88781815508316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37629123 (or 37629114 counting only the distinct ones).

The product of its (nonzero) digits is 103219200, while the sum is 69.

The spelling of 88781815508316 in words is "eighty-eight trillion, seven hundred eighty-one billion, eight hundred fifteen million, five hundred eight thousand, three hundred sixteen".