81360623626 has 16 divisors (see below), whose sum is σ = 126388120320. Its totient is φ = 39239799840.

The previous prime is 81360623623. The next prime is 81360623677. The reversal of 81360623626 is 62632606318.

It is not an unprimeable number, because it can be changed into a prime (81360623623) 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, 2118211 + ... + 2156278.

It is an arithmetic number, because the mean of its divisors is an integer number (7899257520).

Almost surely, 2^81360623626 is an apocalyptic number.

81360623626 is a deficient number, since it is larger than the sum of its proper divisors (45027496694).

81360623626 is a wasteful number, since it uses less digits than its factorization.

81360623626 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4274829.

The product of its (nonzero) digits is 373248, while the sum is 43.

The spelling of 81360623626 in words is "eighty-one billion, three hundred sixty million, six hundred twenty-three thousand, six hundred twenty-six".