81002158754 has 32 divisors (see below), whose sum is σ = 135082914624. Its totient is φ = 36115634880.

The previous prime is 81002158733. The next prime is 81002158763. The reversal of 81002158754 is 45785120018.

It is a super-2 number, since 2×81002158754² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8020532 + ... + 8030624.

It is an arithmetic number, because the mean of its divisors is an integer number (4221341082).

Almost surely, 2^81002158754 is an apocalyptic number.

81002158754 is a deficient number, since it is larger than the sum of its proper divisors (54080755870).

81002158754 is a wasteful number, since it uses less digits than its factorization.

81002158754 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17042.

The product of its (nonzero) digits is 89600, while the sum is 41.

The spelling of 81002158754 in words is "eighty-one billion, two million, one hundred fifty-eight thousand, seven hundred fifty-four".