11886571945 has 8 divisors (see below), whose sum is σ = 14286073536. Its totient is φ = 9494466096.

The previous prime is 11886571927. The next prime is 11886571967. The reversal of 11886571945 is 54917568811.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11886571945 - 2⁵ = 11886571913 is a prime.

It is a super-2 number, since 2×11886571945² (a number of 21 digits) contains 22 as substring.

It is a Duffinian 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, 1845397 + ... + 1851826.

It is an arithmetic number, because the mean of its divisors is an integer number (1785759192).

Almost surely, 2^11886571945 is an apocalyptic number.

It is an amenable number.

11886571945 is a deficient number, since it is larger than the sum of its proper divisors (2399501591).

11886571945 is an equidigital number, since it uses as much as digits as its factorization.

11886571945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3697871.

The product of its digits is 2419200, while the sum is 55.

The spelling of 11886571945 in words is "eleven billion, eight hundred eighty-six million, five hundred seventy-one thousand, nine hundred forty-five".