11975964375 has 40 divisors (see below), whose sum is σ = 20048782336. Its totient is φ = 6356700000.

The previous prime is 11975964367. The next prime is 11975964383. The reversal of 11975964375 is 57346957911.

It is an interprime number because it is at equal distance from previous prime (11975964367) and next prime (11975964383).

It is not a de Polignac number, because 11975964375 - 2³ = 11975964367 is a prime.

It is a super-2 number, since 2×11975964375² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

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, 380490 + ... + 410760.

Almost surely, 2^11975964375 is an apocalyptic number.

11975964375 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

11975964375 is a deficient number, since it is larger than the sum of its proper divisors (8072817961).

11975964375 is an equidigital number, since it uses as much as digits as its factorization.

11975964375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30505 (or 30490 counting only the distinct ones).

The product of its digits is 7144200, while the sum is 57.

The spelling of 11975964375 in words is "eleven billion, nine hundred seventy-five million, nine hundred sixty-four thousand, three hundred seventy-five".