82138910500 has 48 divisors (see below), whose sum is σ = 180025582464. Its totient is φ = 32739410400.

The previous prime is 82138910479. The next prime is 82138910509. The reversal of 82138910500 is 501983128.

It is a self number, because there is not a number n which added to its sum of digits gives 82138910500.

It is not an unprimeable number, because it can be changed into a prime (82138910509) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 148744 + ... + 431743.

It is an arithmetic number, because the mean of its divisors is an integer number (3750532968).

Almost surely, 2^82138910500 is an apocalyptic number.

It is an amenable number.

82138910500 is an abundant number, since it is smaller than the sum of its proper divisors (97886671964).

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

82138910500 is a wasteful number, since it uses less digits than its factorization.

82138910500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 580789 (or 580777 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 37.

The spelling of 82138910500 in words is "eighty-two billion, one hundred thirty-eight million, nine hundred ten thousand, five hundred".