7881613792 has 72 divisors (see below), whose sum is σ = 17193612744. Its totient is φ = 3552966144.

The previous prime is 7881613787. The next prime is 7881613807. The reversal of 7881613792 is 2973161887.

It is a Harshad number since it is a multiple of its sum of digits (52).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 215598 + ... + 249490.

It is an arithmetic number, because the mean of its divisors is an integer number (238800177).

Almost surely, 2^7881613792 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 7881613792, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8596806372).

7881613792 is an abundant number, since it is smaller than the sum of its proper divisors (9311998952).

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

7881613792 is a wasteful number, since it uses less digits than its factorization.

7881613792 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33972 (or 33951 counting only the distinct ones).

The product of its digits is 1016064, while the sum is 52.

The square root of 7881613792 is about 88778.4534219875. The cubic root of 7881613792 is about 1990.0854143788.

The spelling of 7881613792 in words is "seven billion, eight hundred eighty-one million, six hundred thirteen thousand, seven hundred ninety-two".