83570061312 has 130 divisors (see below), whose sum is σ = 249648967568. Its totient is φ = 27856576512.

The previous prime is 83570061259. The next prime is 83570061319. The reversal of 83570061312 is 21316007538.

83570061312 is a `hidden beast` number, since 8 + 35 + 7 + 0 + 0 + 613 + 1 + 2 = 666.

It is a super-2 number, since 2×83570061312² (a number of 23 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83570061319) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 205833 + ... + 457719.

Almost surely, 2^83570061312 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 83570061312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (124824483784).

83570061312 is an abundant number, since it is smaller than the sum of its proper divisors (166078906256).

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

83570061312 is an equidigital number, since it uses as much as digits as its factorization.

83570061312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251923 (or 251892 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The spelling of 83570061312 in words is "eighty-three billion, five hundred seventy million, sixty-one thousand, three hundred twelve".