15106521601 has 16 divisors (see below), whose sum is σ = 16044779520. Its totient is φ = 14192156880.

The previous prime is 15106521593. The next prime is 15106521611. The reversal of 15106521601 is 10612560151.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 15106521601 - 2³ = 15106521593 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 15106521601.

It is not an unprimeable number, because it can be changed into a prime (15106521611) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1747576 + ... + 1756198.

It is an arithmetic number, because the mean of its divisors is an integer number (1002798720).

Almost surely, 2^15106521601 is an apocalyptic number.

It is an amenable number.

15106521601 is a deficient number, since it is larger than the sum of its proper divisors (938257919).

15106521601 is a wasteful number, since it uses less digits than its factorization.

15106521601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9996.

The product of its (nonzero) digits is 1800, while the sum is 28.

The spelling of 15106521601 in words is "fifteen billion, one hundred six million, five hundred twenty-one thousand, six hundred one".