6156517872 has 20 divisors (see below), whose sum is σ = 15904337960. Its totient is φ = 2052172608.

The previous prime is 6156517841. The next prime is 6156517877. The reversal of 6156517872 is 2787156516.

It is a hoax number, since the sum of its digits (48) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (48), and also a Moran number because the ratio is a prime number: 128260789 = 6156517872 / (6 + 1 + 5 + 6 + 5 + 1 + 7 + 8 + 7 + 2).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6156517877) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64130347 + ... + 64130442.

It is an arithmetic number, because the mean of its divisors is an integer number (795216898).

Almost surely, 2^6156517872 is an apocalyptic number.

It is an amenable number.

6156517872 is an abundant number, since it is smaller than the sum of its proper divisors (9747820088).

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

6156517872 is a wasteful number, since it uses less digits than its factorization.

6156517872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128260800 (or 128260794 counting only the distinct ones).

The product of its digits is 705600, while the sum is 48.

The square root of 6156517872 is about 78463.4811361311. The cubic root of 6156517872 is about 1832.7858146247.

The spelling of 6156517872 in words is "six billion, one hundred fifty-six million, five hundred seventeen thousand, eight hundred seventy-two".