15561077201 has 16 divisors (see below), whose sum is σ = 16212147840. Its totient is φ = 14917848960.

The previous prime is 15561077183. The next prime is 15561077251. The reversal of 15561077201 is 10277016551.

It is a cyclic number.

It is not a de Polignac number, because 15561077201 - 2¹⁴ = 15561060817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15561077251) 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, 8333870 + ... + 8335736.

It is an arithmetic number, because the mean of its divisors is an integer number (1013259240).

Almost surely, 2^15561077201 is an apocalyptic number.

It is an amenable number.

15561077201 is a deficient number, since it is larger than the sum of its proper divisors (651070639).

15561077201 is a wasteful number, since it uses less digits than its factorization.

15561077201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3784.

The product of its (nonzero) digits is 14700, while the sum is 35.

The spelling of 15561077201 in words is "fifteen billion, five hundred sixty-one million, seventy-seven thousand, two hundred one".