82137186247408 has 80 divisors (see below), whose sum is σ = 176700279163680. Its totient is φ = 36808706285568.

The previous prime is 82137186247393. The next prime is 82137186247427. The reversal of 82137186247408 is 80474268173128.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70745610 + ... + 71897257.

It is an arithmetic number, because the mean of its divisors is an integer number (2208753489546).

Almost surely, 2^{82137186247408} is an apocalyptic number.

It is an amenable number.

82137186247408 is an abundant number, since it is smaller than the sum of its proper divisors (94563092916272).

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

82137186247408 is a wasteful number, since it uses less digits than its factorization.

82137186247408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142642994 (or 142642988 counting only the distinct ones).

The product of its (nonzero) digits is 28901376, while the sum is 61.

The spelling of 82137186247408 in words is "eighty-two trillion, one hundred thirty-seven billion, one hundred eighty-six million, two hundred forty-seven thousand, four hundred eight".