15395405488561 has 4 divisors (see below), whose sum is σ = 17594749129792. Its totient is φ = 13196061847332.

The previous prime is 15395405488553. The next prime is 15395405488607. The reversal of 15395405488561 is 16588450459351.

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.

It is not a de Polignac number, because 15395405488561 - 2³ = 15395405488553 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 15395405488493 and 15395405488502.

It is not an unprimeable number, because it can be changed into a prime (15395405488261) 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, 1099671820605 + ... + 1099671820618.

It is an arithmetic number, because the mean of its divisors is an integer number (4398687282448).

Almost surely, 2^{15395405488561} is an apocalyptic number.

It is an amenable number.

15395405488561 is a deficient number, since it is larger than the sum of its proper divisors (2199343641231).

15395405488561 is an equidigital number, since it uses as much as digits as its factorization.

15395405488561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2199343641230.

The product of its (nonzero) digits is 103680000, while the sum is 64.

The spelling of 15395405488561 in words is "fifteen trillion, three hundred ninety-five billion, four hundred five million, four hundred eighty-eight thousand, five hundred sixty-one".