11864707505 has 32 divisors (see below), whose sum is σ = 16996262400. Its totient is φ = 7778921472.

The previous prime is 11864707499. The next prime is 11864707511. The reversal of 11864707505 is 50570746811.

It is an interprime number because it is at equal distance from previous prime (11864707499) and next prime (11864707511).

It is not a de Polignac number, because 11864707505 - 2¹⁰ = 11864706481 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 47801 + ... + 161289.

It is an arithmetic number, because the mean of its divisors is an integer number (531133200).

Almost surely, 2^11864707505 is an apocalyptic number.

It is an amenable number.

11864707505 is a deficient number, since it is larger than the sum of its proper divisors (5131554895).

11864707505 is a wasteful number, since it uses less digits than its factorization.

11864707505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113633.

The product of its (nonzero) digits is 235200, while the sum is 44.

The spelling of 11864707505 in words is "eleven billion, eight hundred sixty-four million, seven hundred seven thousand, five hundred five".