612356861584 has 20 divisors (see below), whose sum is σ = 1277706144316. Its totient is φ = 282626243712.

The previous prime is 612356861549. The next prime is 612356861653. The reversal of 612356861584 is 485168653216.

It can be written as a sum of positive squares in 2 ways, for example, as 144911171584 + 467445690000 = 380672^2 + 683700^2 .

It is a super-2 number, since 2×612356861584² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1472011479 + ... + 1472011894.

Almost surely, 2^612356861584 is an apocalyptic number.

It is an amenable number.

612356861584 is an abundant number, since it is smaller than the sum of its proper divisors (665349282732).

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

612356861584 is a wasteful number, since it uses less digits than its factorization.

612356861584 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2944023394 (or 2944023388 counting only the distinct ones).

The product of its digits is 8294400, while the sum is 55.

The spelling of 612356861584 in words is "six hundred twelve billion, three hundred fifty-six million, eight hundred sixty-one thousand, five hundred eighty-four".