81037483772 has 12 divisors (see below), whose sum is σ = 162074967600. Its totient is φ = 34730350176.

The previous prime is 81037483729. The next prime is 81037483777. The reversal of 81037483772 is 27738473018.

81037483772 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 81037483772.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81037483777) 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, 1447097897 + ... + 1447097952.

It is an arithmetic number, because the mean of its divisors is an integer number (13506247300).

Almost surely, 2^81037483772 is an apocalyptic number.

It is an amenable number.

81037483772 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

81037483772 is a wasteful number, since it uses less digits than its factorization.

81037483772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2894195860 (or 2894195858 counting only the distinct ones).

The product of its (nonzero) digits is 1580544, while the sum is 50.

The spelling of 81037483772 in words is "eighty-one billion, thirty-seven million, four hundred eighty-three thousand, seven hundred seventy-two".