11661515106 has 32 divisors (see below), whose sum is σ = 23657054400. Its totient is φ = 3831711744.

The previous prime is 11661515087. The next prime is 11661515113. The reversal of 11661515106 is 60151516611.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 197526 + ... + 249678.

It is an arithmetic number, because the mean of its divisors is an integer number (739282950).

Almost surely, 2^11661515106 is an apocalyptic number.

11661515106 is an abundant number, since it is smaller than the sum of its proper divisors (11995539294).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11661515106 is a wasteful number, since it uses less digits than its factorization.

11661515106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52690.

The product of its (nonzero) digits is 5400, while the sum is 33.

The spelling of 11661515106 in words is "eleven billion, six hundred sixty-one million, five hundred fifteen thousand, one hundred six".