11270511720 has 160 divisors (see below), whose sum is σ = 40795551720. Its totient is φ = 2774269440.

The previous prime is 11270511719. The next prime is 11270511737. The reversal of 11270511720 is 2711507211.

11270511720 is a `hidden beast` number, since 1 + 12 + 70 + 511 + 72 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 3620910276 + 7649601444 = 60174^2 + 87462^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 91671 + ... + 175910.

Almost surely, 2^11270511720 is an apocalyptic number.

11270511720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11270511720 is an abundant number, since it is smaller than the sum of its proper divisors (29525040000).

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

11270511720 is a wasteful number, since it uses less digits than its factorization.

11270511720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267617 (or 267604 counting only the distinct ones).

The product of its (nonzero) digits is 980, while the sum is 27.

The spelling of 11270511720 in words is "eleven billion, two hundred seventy million, five hundred eleven thousand, seven hundred twenty".