81037084796 has 12 divisors (see below), whose sum is σ = 143757568752. Its totient is φ = 39963493728.

The previous prime is 81037084769. The next prime is 81037084823. The reversal of 81037084796 is 69748073018.

It is an interprime number because it is at equal distance from previous prime (81037084769) and next prime (81037084823).

It is a super-2 number, since 2×81037084796² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 138761840 + ... + 138762423.

It is an arithmetic number, because the mean of its divisors is an integer number (11979797396).

Almost surely, 2^81037084796 is an apocalyptic number.

It is an amenable number.

81037084796 is a deficient number, since it is larger than the sum of its proper divisors (62720483956).

81037084796 is a wasteful number, since it uses less digits than its factorization.

81037084796 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277524340 (or 277524338 counting only the distinct ones).

The product of its (nonzero) digits is 2032128, while the sum is 53.

The spelling of 81037084796 in words is "eighty-one billion, thirty-seven million, eighty-four thousand, seven hundred ninety-six".