81014272542 has 48 divisors (see below), whose sum is σ = 202674911712. Its totient is φ = 22908303360.

The previous prime is 81014272541. The next prime is 81014272543. The reversal of 81014272542 is 24527241018.

81014272542 is a `hidden beast` number, since 8 + 1 + 0 + 1 + 42 + 72 + 542 = 666.

It is an interprime number because it is at equal distance from previous prime (81014272541) and next prime (81014272543).

It is a junction number, because it is equal to n+sod(n) for n = 81014272497 and 81014272506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81014272541) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3302059 + ... + 3326502.

It is an arithmetic number, because the mean of its divisors is an integer number (4222393994).

Almost surely, 2^81014272542 is an apocalyptic number.

81014272542 is an abundant number, since it is smaller than the sum of its proper divisors (121660639170).

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

81014272542 is a wasteful number, since it uses less digits than its factorization.

81014272542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6628673 (or 6628670 counting only the distinct ones).

The product of its (nonzero) digits is 35840, while the sum is 36.

The spelling of 81014272542 in words is "eighty-one billion, fourteen million, two hundred seventy-two thousand, five hundred forty-two".