81400014802 has 8 divisors (see below), whose sum is σ = 122492627712. Its totient is φ = 40569138900.

The previous prime is 81400014797. The next prime is 81400014803. The reversal of 81400014802 is 20841000418.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (81400014803) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65433474 + ... + 65434717.

It is an arithmetic number, because the mean of its divisors is an integer number (15311578464).

Almost surely, 2^81400014802 is an apocalyptic number.

81400014802 is a deficient number, since it is larger than the sum of its proper divisors (41092612910).

81400014802 is a wasteful number, since it uses less digits than its factorization.

81400014802 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130868504.

The product of its (nonzero) digits is 2048, while the sum is 28.

The spelling of 81400014802 in words is "eighty-one billion, four hundred million, fourteen thousand, eight hundred two".