83565200820 has 24 divisors (see below), whose sum is σ = 233982562464. Its totient is φ = 22284053536.

The previous prime is 83565200813. The next prime is 83565200827. The reversal of 83565200820 is 2800256538.

It is an interprime number because it is at equal distance from previous prime (83565200813) and next prime (83565200827).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83565200827) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 696376614 + ... + 696376733.

It is an arithmetic number, because the mean of its divisors is an integer number (9749273436).

Almost surely, 2^83565200820 is an apocalyptic number.

It is an amenable number.

83565200820 is an abundant number, since it is smaller than the sum of its proper divisors (150417361644).

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

83565200820 is a wasteful number, since it uses less digits than its factorization.

83565200820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1392753359 (or 1392753357 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 39.

The spelling of 83565200820 in words is "eighty-three billion, five hundred sixty-five million, two hundred thousand, eight hundred twenty".