82637400984 has 24 divisors (see below), whose sum is σ = 206597023260. Its totient is φ = 27545330896.

The previous prime is 82637400983. The next prime is 82637400991. The reversal of 82637400984 is 48900473628.

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82637400983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1378957 + ... + 1437635.

Almost surely, 2^82637400984 is an apocalyptic number.

It is an amenable number.

82637400984 is an abundant number, since it is smaller than the sum of its proper divisors (123959622276).

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

82637400984 is an frugal number, since it uses more digits than its factorization.

82637400984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117367 (or 58684 counting only the distinct ones).

The product of its (nonzero) digits is 2322432, while the sum is 51.

The spelling of 82637400984 in words is "eighty-two billion, six hundred thirty-seven million, four hundred thousand, nine hundred eighty-four".