15331434661 has 8 divisors (see below), whose sum is σ = 15585687584. Its totient is φ = 15077929680.

The previous prime is 15331434659. The next prime is 15331434697. The reversal of 15331434661 is 16643413351.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 15331434661 - 2¹ = 15331434659 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 15331434661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15331434641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 145575 + ... + 227716.

It is an arithmetic number, because the mean of its divisors is an integer number (1948210948).

Almost surely, 2^15331434661 is an apocalyptic number.

It is an amenable number.

15331434661 is a deficient number, since it is larger than the sum of its proper divisors (254252923).

15331434661 is an equidigital number, since it uses as much as digits as its factorization.

15331434661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 373971.

The product of its digits is 77760, while the sum is 37.

The spelling of 15331434661 in words is "fifteen billion, three hundred thirty-one million, four hundred thirty-four thousand, six hundred sixty-one".