81462079416 has 32 divisors (see below), whose sum is σ = 214373894400. Its totient is φ = 25724867040.

The previous prime is 81462079411. The next prime is 81462079423. The reversal of 81462079416 is 61497026418.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81462079411) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89322000 + ... + 89322911.

It is an arithmetic number, because the mean of its divisors is an integer number (6699184200).

Almost surely, 2^81462079416 is an apocalyptic number.

It is an amenable number.

81462079416 is an abundant number, since it is smaller than the sum of its proper divisors (132911814984).

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

81462079416 is a wasteful number, since it uses less digits than its factorization.

81462079416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178644939 (or 178644935 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 48.

The spelling of 81462079416 in words is "eighty-one billion, four hundred sixty-two million, seventy-nine thousand, four hundred sixteen".