7755172656 has 160 divisors (see below), whose sum is σ = 25185578496. Its totient is φ = 2014214400.

The previous prime is 7755172613. The next prime is 7755172661. The reversal of 7755172656 is 6562715577.

It is a junction number, because it is equal to n+sod(n) for n = 7755172599 and 7755172608.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 438546 + ... + 455886.

Almost surely, 2^7755172656 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 7755172656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12592789248).

7755172656 is an abundant number, since it is smaller than the sum of its proper divisors (17430405840).

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

7755172656 is a wasteful number, since it uses less digits than its factorization.

7755172656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17392 (or 17364 counting only the distinct ones).

The product of its digits is 3087000, while the sum is 51.

The square root of 7755172656 is about 88063.4581196991. The cubic root of 7755172656 is about 1979.3859824463.

The spelling of 7755172656 in words is "seven billion, seven hundred fifty-five million, one hundred seventy-two thousand, six hundred fifty-six".