11881857270 has 32 divisors (see below), whose sum is σ = 29756305152. Its totient is φ = 3030734432.

The previous prime is 11881857269. The next prime is 11881857283. The reversal of 11881857270 is 7275818811.

It is a congruent number.

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, 8609352 + ... + 8610731.

It is an arithmetic number, because the mean of its divisors is an integer number (929884536).

Almost surely, 2^11881857270 is an apocalyptic number.

11881857270 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11881857270 is an abundant number, since it is smaller than the sum of its proper divisors (17874447882).

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

11881857270 is a wasteful number, since it uses less digits than its factorization.

11881857270 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17220116.

The product of its (nonzero) digits is 250880, while the sum is 48.

The spelling of 11881857270 in words is "eleven billion, eight hundred eighty-one million, eight hundred fifty-seven thousand, two hundred seventy".