11861091770 has 16 divisors (see below), whose sum is σ = 23290871328. Its totient is φ = 4313124240.

The previous prime is 11861091763. The next prime is 11861091773. The reversal of 11861091770 is 7719016811.

It is not an unprimeable number, because it can be changed into a prime (11861091773) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53913944 + ... + 53914163.

It is an arithmetic number, because the mean of its divisors is an integer number (1455679458).

Almost surely, 2^11861091770 is an apocalyptic number.

11861091770 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11861091770 is a deficient number, since it is larger than the sum of its proper divisors (11429779558).

11861091770 is a wasteful number, since it uses less digits than its factorization.

11861091770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107828125.

The product of its (nonzero) digits is 21168, while the sum is 41.

The spelling of 11861091770 in words is "eleven billion, eight hundred sixty-one million, ninety-one thousand, seven hundred seventy".