11734937513 has 4 divisors (see below), whose sum is σ = 12637625028. Its totient is φ = 10832250000.

The previous prime is 11734937509. The next prime is 11734937519. The reversal of 11734937513 is 31573943711.

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

It can be written as a sum of positive squares in 2 ways, for example, as 4973493529 + 6761443984 = 70523^2 + 82228^2 .

It is not a de Polignac number, because 11734937513 - 2² = 11734937509 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11734937519) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 451343738 + ... + 451343763.

It is an arithmetic number, because the mean of its divisors is an integer number (3159406257).

Almost surely, 2^11734937513 is an apocalyptic number.

11734937513 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

11734937513 is a deficient number, since it is larger than the sum of its proper divisors (902687515).

11734937513 is an equidigital number, since it uses as much as digits as its factorization.

11734937513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 902687514.

The product of its digits is 238140, while the sum is 44.

The spelling of 11734937513 in words is "eleven billion, seven hundred thirty-four million, nine hundred thirty-seven thousand, five hundred thirteen".