82121455372 has 12 divisors (see below), whose sum is σ = 156777323976. Its totient is φ = 37327934240.

The previous prime is 82121455337. The next prime is 82121455393. The reversal of 82121455372 is 27355412128.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 933198313 + ... + 933198400.

It is an arithmetic number, because the mean of its divisors is an integer number (13064776998).

Almost surely, 2^82121455372 is an apocalyptic number.

It is an amenable number.

82121455372 is a deficient number, since it is larger than the sum of its proper divisors (74655868604).

82121455372 is a wasteful number, since it uses less digits than its factorization.

82121455372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1866396728 (or 1866396726 counting only the distinct ones).

The product of its digits is 134400, while the sum is 40.

The spelling of 82121455372 in words is "eighty-two billion, one hundred twenty-one million, four hundred fifty-five thousand, three hundred seventy-two".