4991881770792 has 96 divisors (see below), whose sum is σ = 15453392647680. Its totient is φ = 1426036855680.

The previous prime is 4991881770787. The next prime is 4991881770809. The reversal of 4991881770792 is 2970771881994.

It is a super-2 number, since 2×4991881770792² (a number of 26 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a self number, because there is not a number n which added to its sum of digits gives 4991881770792.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2613673 + ... + 4100615.

It is an arithmetic number, because the mean of its divisors is an integer number (160972840080).

Almost surely, 2^{4991881770792} is an apocalyptic number.

4991881770792 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is an amenable number.

4991881770792 is an abundant number, since it is smaller than the sum of its proper divisors (10461510876888).

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

4991881770792 is a wasteful number, since it uses less digits than its factorization.

4991881770792 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1493623 (or 1493616 counting only the distinct ones).

The product of its (nonzero) digits is 128024064, while the sum is 72.

The spelling of 4991881770792 in words is "four trillion, nine hundred ninety-one billion, eight hundred eighty-one million, seven hundred seventy thousand, seven hundred ninety-two".