88513763581 has 2 divisors, whose sum is σ = 88513763582. Its totient is φ = 88513763580.

The previous prime is 88513763567. The next prime is 88513763627. The reversal of 88513763581 is 18536731588.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 45013987225 + 43499776356 = 212165^2 + 208566^2 .

It is a cyclic number.

It is not a de Polignac number, because 88513763581 - 2⁵ = 88513763549 is a prime.

It is a super-2 number, since 2×88513763581² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (88513763561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44256881790 + 44256881791.

It is an arithmetic number, because the mean of its divisors is an integer number (44256881791).

Almost surely, 2^88513763581 is an apocalyptic number.

It is an amenable number.

88513763581 is a deficient number, since it is larger than the sum of its proper divisors (1).

88513763581 is an equidigital number, since it uses as much as digits as its factorization.

88513763581 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4838400, while the sum is 55.

The spelling of 88513763581 in words is "eighty-eight billion, five hundred thirteen million, seven hundred sixty-three thousand, five hundred eighty-one".