82986209388 has 36 divisors (see below), whose sum is σ = 215440177680. Its totient is φ = 26914445856.

The previous prime is 82986209309. The next prime is 82986209431. The reversal of 82986209388 is 88390268928.

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31149648 + ... + 31152311.

It is an arithmetic number, because the mean of its divisors is an integer number (5984449380).

Almost surely, 2^82986209388 is an apocalyptic number.

It is an amenable number.

82986209388 is an abundant number, since it is smaller than the sum of its proper divisors (132453968292).

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

82986209388 is a wasteful number, since it uses less digits than its factorization.

82986209388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62302006 (or 62302001 counting only the distinct ones).

The product of its (nonzero) digits is 23887872, while the sum is 63.

The spelling of 82986209388 in words is "eighty-two billion, nine hundred eighty-six million, two hundred nine thousand, three hundred eighty-eight".