15240520011 has 8 divisors (see below), whose sum is σ = 20530185424. Its totient is φ = 10055600640.

The previous prime is 15240519991. The next prime is 15240520013. The reversal of 15240520011 is 11002504251.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 15240520011 - 2⁶ = 15240519947 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 15240520011.

It is not an unprimeable number, because it can be changed into a prime (15240520013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26186170 + ... + 26186751.

It is an arithmetic number, because the mean of its divisors is an integer number (2566273178).

Almost surely, 2^15240520011 is an apocalyptic number.

15240520011 is a deficient number, since it is larger than the sum of its proper divisors (5289665413).

15240520011 is an equidigital number, since it uses as much as digits as its factorization.

15240520011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52373021.

The product of its (nonzero) digits is 400, while the sum is 21.

The spelling of 15240520011 in words is "fifteen billion, two hundred forty million, five hundred twenty thousand, eleven".