11537638507 has 4 divisors (see below), whose sum is σ = 11538669856. Its totient is φ = 11536607160.

The previous prime is 11537638501. The next prime is 11537638513. The reversal of 11537638507 is 70583673511.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (11537638501) and next prime (11537638513).

It is a cyclic number.

It is not a de Polignac number, because 11537638507 - 2¹⁹ = 11537114219 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11537638501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 498708 + ... + 521329.

It is an arithmetic number, because the mean of its divisors is an integer number (2884667464).

Almost surely, 2^11537638507 is an apocalyptic number.

11537638507 is a deficient number, since it is larger than the sum of its proper divisors (1031349).

11537638507 is a wasteful number, since it uses less digits than its factorization.

11537638507 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1031348.

The product of its (nonzero) digits is 529200, while the sum is 46.

The spelling of 11537638507 in words is "eleven billion, five hundred thirty-seven million, six hundred thirty-eight thousand, five hundred seven".