11637730123 has 4 divisors (see below), whose sum is σ = 11640486240. Its totient is φ = 11634974008.

The previous prime is 11637729997. The next prime is 11637730163. The reversal of 11637730123 is 32103773611.

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

It is a cyclic number.

It is not a de Polignac number, because 11637730123 - 2²¹ = 11635632971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11637730163) 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, 1371715 + ... + 1380172.

It is an arithmetic number, because the mean of its divisors is an integer number (2910121560).

Almost surely, 2^11637730123 is an apocalyptic number.

11637730123 is a deficient number, since it is larger than the sum of its proper divisors (2756117).

11637730123 is an equidigital number, since it uses as much as digits as its factorization.

11637730123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2756116.

The product of its (nonzero) digits is 15876, while the sum is 34.

The spelling of 11637730123 in words is "eleven billion, six hundred thirty-seven million, seven hundred thirty thousand, one hundred twenty-three".