612613831920 has 160 divisors (see below), whose sum is σ = 2026649714688. Its totient is φ = 152543268864.

The previous prime is 612613831913. The next prime is 612613831927. The reversal of 612613831920 is 29138316216.

It is an interprime number because it is at equal distance from previous prime (612613831913) and next prime (612613831927).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (612613831927) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 72984 + ... + 1109303.

Almost surely, 2^612613831920 is an apocalyptic number.

612613831920 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 612613831920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1013324857344).

612613831920 is an abundant number, since it is smaller than the sum of its proper divisors (1414035882768).

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

612613831920 is a wasteful number, since it uses less digits than its factorization.

612613831920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1182447 (or 1182441 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 42.

The spelling of 612613831920 in words is "six hundred twelve billion, six hundred thirteen million, eight hundred thirty-one thousand, nine hundred twenty".