15520114513 has 4 divisors (see below), whose sum is σ = 15521338980. Its totient is φ = 15518890048.

The previous prime is 15520114507. The next prime is 15520114543. The reversal of 15520114513 is 31541102551.

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 4987608129 + 10532506384 = 70623^2 + 102628^2 .

It is a cyclic number.

It is not a de Polignac number, because 15520114513 - 2¹⁷ = 15519983441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15520114543) 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, 593020 + ... + 618637.

It is an arithmetic number, because the mean of its divisors is an integer number (3880334745).

Almost surely, 2^15520114513 is an apocalyptic number.

It is an amenable number.

15520114513 is a deficient number, since it is larger than the sum of its proper divisors (1224467).

15520114513 is a wasteful number, since it uses less digits than its factorization.

15520114513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1224466.

The product of its (nonzero) digits is 3000, while the sum is 28.

The spelling of 15520114513 in words is "fifteen billion, five hundred twenty million, one hundred fourteen thousand, five hundred thirteen".