15601602361 has 4 divisors (see below), whose sum is σ = 15614465572. Its totient is φ = 15588739152.

The previous prime is 15601602337. The next prime is 15601602377. The reversal of 15601602361 is 16320610651.

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 9158490000 + 6443112361 = 95700^2 + 80269^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15601602361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15601602391) 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, 6429786 + ... + 6432211.

It is an arithmetic number, because the mean of its divisors is an integer number (3903616393).

Almost surely, 2^15601602361 is an apocalyptic number.

It is an amenable number.

15601602361 is a deficient number, since it is larger than the sum of its proper divisors (12863211).

15601602361 is a wasteful number, since it uses less digits than its factorization.

15601602361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12863210.

The product of its (nonzero) digits is 6480, while the sum is 31.

The spelling of 15601602361 in words is "fifteen billion, six hundred one million, six hundred two thousand, three hundred sixty-one".