11656728253735 has 16 divisors (see below), whose sum is σ = 14018432684256. Its totient is φ = 9305144576128.

The previous prime is 11656728253717. The next prime is 11656728253759. The reversal of 11656728253735 is 53735282765611.

It is a cyclic number.

It is not a de Polignac number, because 11656728253735 - 2³⁵ = 11622368515367 is a prime.

It is a Duffinian number.

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, 133455297 + ... + 133542613.

It is an arithmetic number, because the mean of its divisors is an integer number (876152042766).

Almost surely, 2^{11656728253735} is an apocalyptic number.

11656728253735 is a deficient number, since it is larger than the sum of its proper divisors (2361704430521).

11656728253735 is an equidigital number, since it uses as much as digits as its factorization.

11656728253735 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144962.

The product of its digits is 63504000, while the sum is 61.

The spelling of 11656728253735 in words is "eleven trillion, six hundred fifty-six billion, seven hundred twenty-eight million, two hundred fifty-three thousand, seven hundred thirty-five".