11661007015 has 64 divisors (see below), whose sum is σ = 17202585600. Its totient is φ = 7570147200.

The previous prime is 11661007003. The next prime is 11661007021. The reversal of 11661007015 is 51070016611.

It is not a de Polignac number, because 11661007015 - 2⁷ = 11661006887 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3982482 + ... + 3985408.

It is an arithmetic number, because the mean of its divisors is an integer number (268790400).

Almost surely, 2^11661007015 is an apocalyptic number.

11661007015 is a deficient number, since it is larger than the sum of its proper divisors (5541578585).

11661007015 is a wasteful number, since it uses less digits than its factorization.

11661007015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3077 (or 3063 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 28.

The spelling of 11661007015 in words is "eleven billion, six hundred sixty-one million, seven thousand, fifteen".