7855012044 has 192 divisors, whose sum is σ = 23710579200. Its totient is φ = 2222438400.

The previous prime is 7855011991. The next prime is 7855012063. The reversal of 7855012044 is 4402105587.

It is a super-2 number, since 2×7855012044² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

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 63 ways as a sum of consecutive naturals, for example, 2644192 + ... + 2647160.

It is an arithmetic number, because the mean of its divisors is an integer number (123492600).

Almost surely, 2^7855012044 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 7855012044, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11855289600).

7855012044 is an abundant number, since it is smaller than the sum of its proper divisors (15855567156).

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

7855012044 is a wasteful number, since it uses less digits than its factorization.

7855012044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3141 (or 3133 counting only the distinct ones).

The product of its (nonzero) digits is 44800, while the sum is 36.

The square root of 7855012044 is about 88628.5058206444. The cubic root of 7855012044 is about 1987.8439350677.

The spelling of 7855012044 in words is "seven billion, eight hundred fifty-five million, twelve thousand, forty-four".