85811516213536 has 24 divisors (see below), whose sum is σ = 171320879205504. Its totient is φ = 42301451653440.

The previous prime is 85811516213377. The next prime is 85811516213539. The reversal of 85811516213536 is 63531261511858.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (85811516213539) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18884574360 + ... + 18884578903.

It is an arithmetic number, because the mean of its divisors is an integer number (7138369966896).

Almost surely, 2^{85811516213536} is an apocalyptic number.

It is an amenable number.

85811516213536 is a deficient number, since it is larger than the sum of its proper divisors (85509362991968).

85811516213536 is a wasteful number, since it uses less digits than its factorization.

85811516213536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37769153344 (or 37769153336 counting only the distinct ones).

The product of its digits is 5184000, while the sum is 55.

The spelling of 85811516213536 in words is "eighty-five trillion, eight hundred eleven billion, five hundred sixteen million, two hundred thirteen thousand, five hundred thirty-six".