81414305542 has 16 divisors (see below), whose sum is σ = 123506655120. Its totient is φ = 40245517312.

The previous prime is 81414305537. The next prime is 81414305587. The reversal of 81414305542 is 24550341418.

It is a super-2 number, since 2×81414305542² (a number of 23 digits) contains 22 as substring.

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, 2282598 + ... + 2317990.

It is an arithmetic number, because the mean of its divisors is an integer number (7719165945).

Almost surely, 2^81414305542 is an apocalyptic number.

81414305542 is a deficient number, since it is larger than the sum of its proper divisors (42092349578).

81414305542 is a wasteful number, since it uses less digits than its factorization.

81414305542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48407.

The product of its (nonzero) digits is 76800, while the sum is 37.

The spelling of 81414305542 in words is "eighty-one billion, four hundred fourteen million, three hundred five thousand, five hundred forty-two".