15345503661 has 8 divisors (see below), whose sum is σ = 20461641984. Its totient is φ = 10229850560.

The previous prime is 15345503651. The next prime is 15345503711. The reversal of 15345503661 is 16630554351.

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 15345503661 - 2⁶ = 15345503597 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15345503651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39660 + ... + 179621.

It is an arithmetic number, because the mean of its divisors is an integer number (2557705248).

Almost surely, 2^15345503661 is an apocalyptic number.

It is an amenable number.

15345503661 is a deficient number, since it is larger than the sum of its proper divisors (5116138323).

15345503661 is a wasteful number, since it uses less digits than its factorization.

15345503661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242611.

The product of its (nonzero) digits is 162000, while the sum is 39.

The spelling of 15345503661 in words is "fifteen billion, three hundred forty-five million, five hundred three thousand, six hundred sixty-one".