11521867395 has 16 divisors (see below), whose sum is σ = 18617514912. Its totient is φ = 6084153600.

The previous prime is 11521867393. The next prime is 11521867397. The reversal of 11521867395 is 59376812511.

It is an interprime number because it is at equal distance from previous prime (11521867393) and next prime (11521867397).

It is not a de Polignac number, because 11521867395 - 2¹ = 11521867393 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11521867393) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3801082 + ... + 3804111.

It is an arithmetic number, because the mean of its divisors is an integer number (1163594682).

Almost surely, 2^11521867395 is an apocalyptic number.

11521867395 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

11521867395 is a deficient number, since it is larger than the sum of its proper divisors (7095647517).

11521867395 is a wasteful number, since it uses less digits than its factorization.

11521867395 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7605302.

The product of its digits is 453600, while the sum is 48.

The spelling of 11521867395 in words is "eleven billion, five hundred twenty-one million, eight hundred sixty-seven thousand, three hundred ninety-five".