11903731972 has 48 divisors (see below), whose sum is σ = 23820152832. Its totient is φ = 5152229280.

The previous prime is 11903731969. The next prime is 11903731991. The reversal of 11903731972 is 27913730911.

It is a super-2 number, since 2×11903731972² (a number of 21 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (43) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 199303 + ... + 252049.

It is an arithmetic number, because the mean of its divisors is an integer number (496253184).

Almost surely, 2^11903731972 is an apocalyptic number.

It is an amenable number.

11903731972 is an abundant number, since it is smaller than the sum of its proper divisors (11916420860).

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

11903731972 is a wasteful number, since it uses less digits than its factorization.

11903731972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53008 (or 53006 counting only the distinct ones).

The product of its (nonzero) digits is 71442, while the sum is 43.

The spelling of 11903731972 in words is "eleven billion, nine hundred three million, seven hundred thirty-one thousand, nine hundred seventy-two".