11661000510 has 32 divisors (see below), whose sum is σ = 28187752320. Its totient is φ = 3087227808.

The previous prime is 11661000503. The next prime is 11661000563. The reversal of 11661000510 is 1500016611.

It is a congruent number.

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, 1394032 + ... + 1402371.

It is an arithmetic number, because the mean of its divisors is an integer number (880867260).

Almost surely, 2^11661000510 is an apocalyptic number.

11661000510 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11661000510 is an abundant number, since it is smaller than the sum of its proper divisors (16526751810).

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

11661000510 is a wasteful number, since it uses less digits than its factorization.

11661000510 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2796552.

The product of its (nonzero) digits is 180, while the sum is 21.

The spelling of 11661000510 in words is "eleven billion, six hundred sixty-one million, five hundred ten", and thus it is an aban number.