612045433656 has 96 divisors (see below), whose sum is σ = 1757439309600. Its totient is φ = 191761643520.

The previous prime is 612045433619. The next prime is 612045433663. The reversal of 612045433656 is 656334540216.

612045433656 is a `hidden beast` number, since 6 + 1 + 20 + 4 + 543 + 36 + 56 = 666.

It is a super-2 number, since 2×612045433656² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 602925 + ... + 1260003.

It is an arithmetic number, because the mean of its divisors is an integer number (18306659475).

Almost surely, 2^612045433656 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 612045433656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (878719654800).

612045433656 is an abundant number, since it is smaller than the sum of its proper divisors (1145393875944).

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

612045433656 is a wasteful number, since it uses less digits than its factorization.

612045433656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 657869 (or 657862 counting only the distinct ones).

The product of its (nonzero) digits is 1555200, while the sum is 45.

The spelling of 612045433656 in words is "six hundred twelve billion, forty-five million, four hundred thirty-three thousand, six hundred fifty-six".