11929272720 has 80 divisors (see below), whose sum is σ = 36992400192. Its totient is φ = 3180136960.

The previous prime is 11929272709. The next prime is 11929272739. The reversal of 11929272720 is 2727292911.

It is a tau number, because it is divible by the number of its divisors (80).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1055419 + ... + 1066661.

Almost surely, 2^11929272720 is an apocalyptic number.

11929272720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11929272720 is an abundant number, since it is smaller than the sum of its proper divisors (25063127472).

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

11929272720 is a wasteful number, since it uses less digits than its factorization.

11929272720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15680 (or 15674 counting only the distinct ones).

The product of its (nonzero) digits is 63504, while the sum is 42.

The spelling of 11929272720 in words is "eleven billion, nine hundred twenty-nine million, two hundred seventy-two thousand, seven hundred twenty".