6157122816 has 144 divisors (see below), whose sum is σ = 18415426176. Its totient is φ = 1812062208.

The previous prime is 6157122761. The next prime is 6157122817. The reversal of 6157122816 is 6182217516.

It is a super-2 number, since 2×6157122816² = 75820322742615539712, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6157122817) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 216226 + ... + 243038.

It is an arithmetic number, because the mean of its divisors is an integer number (127884904).

Almost surely, 2^6157122816 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 6157122816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9207713088).

6157122816 is an abundant number, since it is smaller than the sum of its proper divisors (12258303360).

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

6157122816 is a wasteful number, since it uses less digits than its factorization.

6157122816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26868 (or 26854 counting only the distinct ones).

The product of its digits is 40320, while the sum is 39.

The square root of 6157122816 is about 78467.3359812859. The cubic root of 6157122816 is about 1832.8458429553.

The spelling of 6157122816 in words is "six billion, one hundred fifty-seven million, one hundred twenty-two thousand, eight hundred sixteen".