81037703416 has 32 divisors (see below), whose sum is σ = 154855346400. Its totient is φ = 39743367040.

The previous prime is 81037703347. The next prime is 81037703489. The reversal of 81037703416 is 61430773018.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1633830 + ... + 1682698.

It is an arithmetic number, because the mean of its divisors is an integer number (4839229575).

Almost surely, 2^81037703416 is an apocalyptic number.

It is an amenable number.

81037703416 is a deficient number, since it is larger than the sum of its proper divisors (73817642984).

81037703416 is a wasteful number, since it uses less digits than its factorization.

81037703416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52839 (or 52835 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 40.

The spelling of 81037703416 in words is "eighty-one billion, thirty-seven million, seven hundred three thousand, four hundred sixteen".