11951820276 has 48 divisors (see below), whose sum is σ = 30429235200. Its totient is φ = 3620999520.

The previous prime is 11951820271. The next prime is 11951820289. The reversal of 11951820276 is 67202815911.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11951820271) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1144125 + ... + 1154523.

It is an arithmetic number, because the mean of its divisors is an integer number (633942400).

Almost surely, 2^11951820276 is an apocalyptic number.

It is an amenable number.

11951820276 is an abundant number, since it is smaller than the sum of its proper divisors (18477414924).

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

11951820276 is a wasteful number, since it uses less digits than its factorization.

11951820276 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19124 (or 19122 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 42.

The spelling of 11951820276 in words is "eleven billion, nine hundred fifty-one million, eight hundred twenty thousand, two hundred seventy-six".