235661826021456 has 40 divisors (see below), whose sum is σ = 608855103861664. Its totient is φ = 78545935128960.

The previous prime is 235661826021449. The next prime is 235661826021487. The reversal of 235661826021456 is 654120628166532.

It is a junction number, because it is equal to n+sod(n) for n = 235661826021396 and 235661826021405.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 249739111 + ... + 250680966.

Almost surely, 2^{235661826021456} is an apocalyptic number.

It is an amenable number.

235661826021456 is an abundant number, since it is smaller than the sum of its proper divisors (373193277840208).

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

235661826021456 is a wasteful number, since it uses less digits than its factorization.

235661826021456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 500429899 (or 500429893 counting only the distinct ones).

The product of its (nonzero) digits is 24883200, while the sum is 57.

The spelling of 235661826021456 in words is "two hundred thirty-five trillion, six hundred sixty-one billion, eight hundred twenty-six million, twenty-one thousand, four hundred fifty-six".