15011660661 has 16 divisors (see below), whose sum is σ = 20152447488. Its totient is φ = 9939384000.

The previous prime is 15011660639. The next prime is 15011660707. The reversal of 15011660661 is 16606611051.

It is not a de Polignac number, because 15011660661 - 2⁷ = 15011660533 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15011661661) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1214211 + ... + 1226511.

It is an arithmetic number, because the mean of its divisors is an integer number (1259527968).

Almost surely, 2^15011660661 is an apocalyptic number.

It is an amenable number.

15011660661 is a deficient number, since it is larger than the sum of its proper divisors (5140786827).

15011660661 is a wasteful number, since it uses less digits than its factorization.

15011660661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15052.

The product of its (nonzero) digits is 6480, while the sum is 33.

The spelling of 15011660661 in words is "fifteen billion, eleven million, six hundred sixty thousand, six hundred sixty-one".