612156155463400 has 96 divisors (see below), whose sum is σ = 1427531079138840. Its totient is φ = 244128225116160.

The previous prime is 612156155463397. The next prime is 612156155463451. The reversal of 612156155463400 is 4364551651216.

It can be written as a sum of positive squares in 12 ways, for example, as 62024665829476 + 550131489633924 = 7875574^2 + 23454882^2 .

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, 2471905984 + ... + 2472153616.

Almost surely, 2^{612156155463400} 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 612156155463400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (713765539569420).

612156155463400 is an abundant number, since it is smaller than the sum of its proper divisors (815374923675440).

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

612156155463400 is a wasteful number, since it uses less digits than its factorization.

612156155463400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284663 (or 284654 counting only the distinct ones).

The product of its (nonzero) digits is 2592000, while the sum is 49.

The spelling of 612156155463400 in words is "six hundred twelve trillion, one hundred fifty-six billion, one hundred fifty-five million, four hundred sixty-three thousand, four hundred".