21410313644 has 6 divisors (see below), whose sum is σ = 37468048884. Its totient is φ = 10705156820.

The previous prime is 21410313607. The next prime is 21410313671. The reversal of 21410313644 is 44631301412.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2676289202 + ... + 2676289209.

It is an arithmetic number, because the mean of its divisors is an integer number (6244674814).

Almost surely, 2^21410313644 is an apocalyptic number.

It is an amenable number.

21410313644 is a deficient number, since it is larger than the sum of its proper divisors (16057735240).

21410313644 is a wasteful number, since it uses less digits than its factorization.

21410313644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5352578415 (or 5352578413 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 29.

The spelling of 21410313644 in words is "twenty-one billion, four hundred ten million, three hundred thirteen thousand, six hundred forty-four".