15601601101 has 4 divisors (see below), whose sum is σ = 15606109792. Its totient is φ = 15597092412.

The previous prime is 15601601089. The next prime is 15601601117. The reversal of 15601601101 is 10110610651.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 10110610651 = 17 ⋅594741803.

It is a cyclic number.

It is not a de Polignac number, because 15601601101 - 2⁹ = 15601600589 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15601601161) 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, 2249151 + ... + 2256076.

It is an arithmetic number, because the mean of its divisors is an integer number (3901527448).

Almost surely, 2^15601601101 is an apocalyptic number.

It is an amenable number.

15601601101 is a deficient number, since it is larger than the sum of its proper divisors (4508691).

15601601101 is an equidigital number, since it uses as much as digits as its factorization.

15601601101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4508690.

The product of its (nonzero) digits is 180, while the sum is 22.

The spelling of 15601601101 in words is "fifteen billion, six hundred one million, six hundred one thousand, one hundred one".