81462025184 has 48 divisors (see below), whose sum is σ = 165608666496. Its totient is φ = 39403584000.

The previous prime is 81462025181. The next prime is 81462025201. The reversal of 81462025184 is 48152026418.

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81462025181) 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, 3262154 + ... + 3287030.

It is an arithmetic number, because the mean of its divisors is an integer number (3450180552).

Almost surely, 2^81462025184 is an apocalyptic number.

It is an amenable number.

81462025184 is an abundant number, since it is smaller than the sum of its proper divisors (84146641312).

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

81462025184 is a wasteful number, since it uses less digits than its factorization.

81462025184 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28219 (or 28211 counting only the distinct ones).

The product of its (nonzero) digits is 122880, while the sum is 41.

The spelling of 81462025184 in words is "eighty-one billion, four hundred sixty-two million, twenty-five thousand, one hundred eighty-four".