81011011038 has 32 divisors (see below), whose sum is σ = 166002842880. Its totient is φ = 26340431040.

The previous prime is 81011011019. The next prime is 81011011061. The reversal of 81011011038 is 83011011018.

It is a junction number, because it is equal to n+sod(n) for n = 81011010999 and 81011011017.

It is a congruent number.

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, 1555423 + ... + 1606661.

It is an arithmetic number, because the mean of its divisors is an integer number (5187588840).

Almost surely, 2^81011011038 is an apocalyptic number.

81011011038 is an abundant number, since it is smaller than the sum of its proper divisors (84991831842).

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

81011011038 is a wasteful number, since it uses less digits than its factorization.

81011011038 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57712.

The product of its (nonzero) digits is 192, while the sum is 24.

The spelling of 81011011038 in words is "eighty-one billion, eleven million, eleven thousand, thirty-eight".