81037834470 has 96 divisors (see below), whose sum is σ = 211874798304. Its totient is φ = 21489753600.

The previous prime is 81037834459. The next prime is 81037834487. The reversal of 81037834470 is 7443873018.

81037834470 is a `hidden beast` number, since 8 + 103 + 78 + 3 + 4 + 470 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 13678929 + ... + 13684851.

It is an arithmetic number, because the mean of its divisors is an integer number (2207029149).

Almost surely, 2^81037834470 is an apocalyptic number.

81037834470 is an abundant number, since it is smaller than the sum of its proper divisors (130836963834).

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

81037834470 is a wasteful number, since it uses less digits than its factorization.

81037834470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6758 (or 6755 counting only the distinct ones).

The product of its (nonzero) digits is 451584, while the sum is 45.

The spelling of 81037834470 in words is "eighty-one billion, thirty-seven million, eight hundred thirty-four thousand, four hundred seventy".