612396994560 has 416 divisors, whose sum is σ = 2178314277888. Its totient is φ = 145875271680.

The previous prime is 612396994513. The next prime is 612396994597. The reversal of 612396994560 is 65499693216.

It is a tau number, because it is divible by the number of its divisors (416).

It is a super-2 number, since 2×612396994560² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a junction number, because it is equal to n+sod(n) for n = 612396994494 and 612396994503.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 24747954 + ... + 24772686.

Almost surely, 2^612396994560 is an apocalyptic number.

612396994560 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 612396994560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1089157138944).

612396994560 is an abundant number, since it is smaller than the sum of its proper divisors (1565917283328).

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

612396994560 is a wasteful number, since it uses less digits than its factorization.

612396994560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24809 (or 24787 counting only the distinct ones).

The product of its (nonzero) digits is 18895680, while the sum is 60.

The spelling of 612396994560 in words is "six hundred twelve billion, three hundred ninety-six million, nine hundred ninety-four thousand, five hundred sixty".