82700215920 has 200 divisors, whose sum is σ = 328263153504. Its totient is φ = 18902896128.

The previous prime is 82700215909. The next prime is 82700215937. The reversal of 82700215920 is 2951200728.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 866239 + ... + 956958.

Almost surely, 2^82700215920 is an apocalyptic number.

82700215920 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

82700215920 is an abundant number, since it is smaller than the sum of its proper divisors (245562937584).

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

82700215920 is a wasteful number, since it uses less digits than its factorization.

82700215920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1823229 (or 1823214 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The spelling of 82700215920 in words is "eighty-two billion, seven hundred million, two hundred fifteen thousand, nine hundred twenty".