21056046440152 has 16 divisors (see below), whose sum is σ = 39480296045400. Its totient is φ = 10527967494720.

The previous prime is 21056046440131. The next prime is 21056046440159. The reversal of 21056046440152 is 25104464065012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21056046440159) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5337402 + ... + 8402377.

Almost surely, 2^{21056046440152} is an apocalyptic number.

It is an amenable number.

21056046440152 is a deficient number, since it is larger than the sum of its proper divisors (18424249605248).

21056046440152 is a wasteful number, since it uses less digits than its factorization.

21056046440152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13931346 (or 13931342 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 40.

The spelling of 21056046440152 in words is "twenty-one trillion, fifty-six billion, forty-six million, four hundred forty thousand, one hundred fifty-two".