11656210433640 has 64 divisors (see below), whose sum is σ = 34969009867200. Its totient is φ = 3108289132032.

The previous prime is 11656210433629. The next prime is 11656210433719. The reversal of 11656210433640 is 4633401265611.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 11656210433592 and 11656210433601.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11804859 + ... + 12754101.

It is an arithmetic number, because the mean of its divisors is an integer number (546390779175).

Almost surely, 2^{11656210433640} is an apocalyptic number.

11656210433640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11656210433640 is an abundant number, since it is smaller than the sum of its proper divisors (23312799433560).

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

11656210433640 is a wasteful number, since it uses less digits than its factorization.

11656210433640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1051586 (or 1051582 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 42.

The spelling of 11656210433640 in words is "eleven trillion, six hundred fifty-six billion, two hundred ten million, four hundred thirty-three thousand, six hundred forty".