11100720156 has 24 divisors (see below), whose sum is σ = 25976334720. Its totient is φ = 3689575152.

The previous prime is 11100720119. The next prime is 11100720167. The reversal of 11100720156 is 65102700111.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1328776 + ... + 1337103.

It is an arithmetic number, because the mean of its divisors is an integer number (1082347280).

Almost surely, 2^11100720156 is an apocalyptic number.

It is an amenable number.

11100720156 is an abundant number, since it is smaller than the sum of its proper divisors (14875614564).

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

11100720156 is a wasteful number, since it uses less digits than its factorization.

11100720156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2666233 (or 2666231 counting only the distinct ones).

The product of its (nonzero) digits is 420, while the sum is 24.

The spelling of 11100720156 in words is "eleven billion, one hundred million, seven hundred twenty thousand, one hundred fifty-six".