5156611610994 has 128 divisors (see below), whose sum is σ = 11803479667200. Its totient is φ = 1667972217600.

The previous prime is 5156611610993. The next prime is 5156611611043. The reversal of 5156611610994 is 4990161166515.

5156611610994 is a `hidden beast` number, since 5 + 1 + 5 + 6 + 6 + 11 + 610 + 9 + 9 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 5156611610994.

It is not an unprimeable number, because it can be changed into a prime (5156611610993) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 244367044 + ... + 244388144.

It is an arithmetic number, because the mean of its divisors is an integer number (92214684900).

Almost surely, 2^{5156611610994} is an apocalyptic number.

5156611610994 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 5156611610994, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5901739833600).

5156611610994 is an abundant number, since it is smaller than the sum of its proper divisors (6646868056206).

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

5156611610994 is a wasteful number, since it uses less digits than its factorization.

5156611610994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22097 (or 22091 counting only the distinct ones).

The product of its (nonzero) digits is 1749600, while the sum is 54.

The spelling of 5156611610994 in words is "five trillion, one hundred fifty-six billion, six hundred eleven million, six hundred ten thousand, nine hundred ninety-four".