81037703415 has 32 divisors (see below), whose sum is σ = 140887296000. Its totient is φ = 39624543360.

The previous prime is 81037703347. The next prime is 81037703489. The reversal of 81037703415 is 51430773018.

It is not a de Polignac number, because 81037703415 - 2²² = 81033509111 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4577340 + ... + 4595009.

It is an arithmetic number, because the mean of its divisors is an integer number (4402728000).

Almost surely, 2^81037703415 is an apocalyptic number.

81037703415 is a deficient number, since it is larger than the sum of its proper divisors (59849592585).

81037703415 is a wasteful number, since it uses less digits than its factorization.

81037703415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9172407.

The product of its (nonzero) digits is 70560, while the sum is 39.

The spelling of 81037703415 in words is "eighty-one billion, thirty-seven million, seven hundred three thousand, four hundred fifteen".