81037483770 has 64 divisors (see below), whose sum is σ = 207312825600. Its totient is φ = 20202298368.

The previous prime is 81037483729. The next prime is 81037483777. The reversal of 81037483770 is 7738473018.

It is a happy 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 31 ways as a sum of consecutive naturals, for example, 457222 + ... + 609201.

It is an arithmetic number, because the mean of its divisors is an integer number (3239262900).

Almost surely, 2^81037483770 is an apocalyptic number.

81037483770 is an abundant number, since it is smaller than the sum of its proper divisors (126275341830).

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

81037483770 is a wasteful number, since it uses less digits than its factorization.

81037483770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1066599.

The product of its (nonzero) digits is 790272, while the sum is 48.

The spelling of 81037483770 in words is "eighty-one billion, thirty-seven million, four hundred eighty-three thousand, seven hundred seventy".