11657272890 has 32 divisors (see below), whose sum is σ = 27987970176. Its totient is φ = 3107437760.

The previous prime is 11657272859. The next prime is 11657272909. The reversal of 11657272890 is 9827275611.

It is a super-2 number, since 2×11657272890² (a number of 21 digits) contains 22 as substring.

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, 9664 + ... + 152996.

It is an arithmetic number, because the mean of its divisors is an integer number (874624068).

Almost surely, 2^11657272890 is an apocalyptic number.

11657272890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11657272890 is an abundant number, since it is smaller than the sum of its proper divisors (16330697286).

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

11657272890 is a wasteful number, since it uses less digits than its factorization.

11657272890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146054.

The product of its (nonzero) digits is 423360, while the sum is 48.

The spelling of 11657272890 in words is "eleven billion, six hundred fifty-seven million, two hundred seventy-two thousand, eight hundred ninety".