612223901968 has 160 divisors (see below), whose sum is σ = 1487356231680. Its totient is φ = 238066698240.

The previous prime is 612223901959. The next prime is 612223902001. The reversal of 612223901968 is 869109322216.

It is a super-2 number, since 2×612223901968² (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 31 ways as a sum of consecutive naturals, for example, 15503593 + ... + 15543031.

It is an arithmetic number, because the mean of its divisors is an integer number (9295976448).

Almost surely, 2^612223901968 is an apocalyptic number.

612223901968 is a gapful number since it is divisible by the number (68) 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 612223901968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (743678115840).

612223901968 is an abundant number, since it is smaller than the sum of its proper divisors (875132329712).

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

612223901968 is a wasteful number, since it uses less digits than its factorization.

612223901968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39765 (or 39759 counting only the distinct ones).

The product of its (nonzero) digits is 559872, while the sum is 49.

The spelling of 612223901968 in words is "six hundred twelve billion, two hundred twenty-three million, nine hundred one thousand, nine hundred sixty-eight".