945991183872 has 120 divisors (see below), whose sum is σ = 2931637771656. Its totient is φ = 270283173888.

The previous prime is 945991183853. The next prime is 945991183877. The reversal of 945991183872 is 278381199549.

It is a super-2 number, since 2×945991183872² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (945991183877) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6209223 + ... + 6359750.

Almost surely, 2^945991183872 is an apocalyptic number.

It is an amenable number.

945991183872 is an abundant number, since it is smaller than the sum of its proper divisors (1985646587784).

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

945991183872 is a wasteful number, since it uses less digits than its factorization.

945991183872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12569008 (or 12568985 counting only the distinct ones).

The product of its digits is 39191040, while the sum is 66.

The spelling of 945991183872 in words is "nine hundred forty-five billion, nine hundred ninety-one million, one hundred eighty-three thousand, eight hundred seventy-two".