11656297411 has 16 divisors (see below), whose sum is σ = 12909903840. Its totient is φ = 10435461120.

The previous prime is 11656297409. The next prime is 11656297421. The reversal of 11656297411 is 11479265611.

It is a cyclic number.

It is not a de Polignac number, because 11656297411 - 2¹ = 11656297409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11656297421) 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, 529635 + ... + 551203.

It is an arithmetic number, because the mean of its divisors is an integer number (806868990).

Almost surely, 2^11656297411 is an apocalyptic number.

11656297411 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11656297411 is a deficient number, since it is larger than the sum of its proper divisors (1253606429).

11656297411 is a wasteful number, since it uses less digits than its factorization.

11656297411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22326.

The product of its digits is 90720, while the sum is 43.

The spelling of 11656297411 in words is "eleven billion, six hundred fifty-six million, two hundred ninety-seven thousand, four hundred eleven".