11715540722 has 4 divisors (see below), whose sum is σ = 17573311086. Its totient is φ = 5857770360.

The previous prime is 11715540709. The next prime is 11715540731. The reversal of 11715540722 is 22704551711.

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

It can be written as a sum of positive squares in only one way, i.e., 11280776521 + 434764201 = 106211^2 + 20851^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2928885179 + ... + 2928885182.

Almost surely, 2^11715540722 is an apocalyptic number.

11715540722 is a deficient number, since it is larger than the sum of its proper divisors (5857770364).

11715540722 is an equidigital number, since it uses as much as digits as its factorization.

11715540722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5857770363.

The product of its (nonzero) digits is 19600, while the sum is 35.

The spelling of 11715540722 in words is "eleven billion, seven hundred fifteen million, five hundred forty thousand, seven hundred twenty-two".