11439137571995 has 16 divisors (see below), whose sum is σ = 15713386319808. Its totient is φ = 7831266938880.

The previous prime is 11439137571947. The next prime is 11439137571997. The reversal of 11439137571995 is 59917573193411.

It is a de Polignac number, because none of the positive numbers 2^k-11439137571995 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11439137571997) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 264834566 + ... + 264877755.

It is an arithmetic number, because the mean of its divisors is an integer number (982086644988).

Almost surely, 2^{11439137571995} is an apocalyptic number.

11439137571995 is a deficient number, since it is larger than the sum of its proper divisors (4274248747813).

11439137571995 is an equidigital number, since it uses as much as digits as its factorization.

11439137571995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 529712950.

The product of its digits is 32148900, while the sum is 65.

The spelling of 11439137571995 in words is "eleven trillion, four hundred thirty-nine billion, one hundred thirty-seven million, five hundred seventy-one thousand, nine hundred ninety-five".