11538461875 has 10 divisors (see below), whose sum is σ = 14418462740. Its totient is φ = 9230769000.

The previous prime is 11538461861. The next prime is 11538461887. The reversal of 11538461875 is 57816483511.

It is a happy number.

It is not a de Polignac number, because 11538461875 - 2¹⁵ = 11538429107 is a prime.

It is a super-2 number, since 2×11538461875² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 9230145 + ... + 9231394.

It is an arithmetic number, because the mean of its divisors is an integer number (1441846274).

Almost surely, 2^11538461875 is an apocalyptic number.

11538461875 is a deficient number, since it is larger than the sum of its proper divisors (2880000865).

11538461875 is an frugal number, since it uses more digits than its factorization.

11538461875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18461559 (or 18461544 counting only the distinct ones).

The product of its digits is 806400, while the sum is 49.

The spelling of 11538461875 in words is "eleven billion, five hundred thirty-eight million, four hundred sixty-one thousand, eight hundred seventy-five".