83666126520 has 48 divisors (see below), whose sum is σ = 271914912360. Its totient is φ = 22310966976.

The previous prime is 83666126483. The next prime is 83666126581. The reversal of 83666126520 is 2562166638.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

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, 116202594 + ... + 116203313.

Almost surely, 2^83666126520 is an apocalyptic number.

It is an amenable number.

83666126520 is an abundant number, since it is smaller than the sum of its proper divisors (188248785840).

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

83666126520 is a wasteful number, since it uses less digits than its factorization.

83666126520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232405924 (or 232405917 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 45.

The spelling of 83666126520 in words is "eighty-three billion, six hundred sixty-six million, one hundred twenty-six thousand, five hundred twenty".