11872209550 has 12 divisors (see below), whose sum is σ = 22082309856. Its totient is φ = 4748883800.

The previous prime is 11872209521. The next prime is 11872209577. The reversal of 11872209550 is 5590227811.

It is a super-2 number, since 2×11872209550² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 118722046 + ... + 118722145.

It is an arithmetic number, because the mean of its divisors is an integer number (1840192488).

Almost surely, 2^11872209550 is an apocalyptic number.

11872209550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11872209550 is a deficient number, since it is larger than the sum of its proper divisors (10210100306).

11872209550 is a wasteful number, since it uses less digits than its factorization.

11872209550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237444203 (or 237444198 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 40.

The spelling of 11872209550 in words is "eleven billion, eight hundred seventy-two million, two hundred nine thousand, five hundred fifty".