21040326594 has 48 divisors (see below), whose sum is σ = 52139767680. Its totient is φ = 6006916800.

The previous prime is 21040326547. The next prime is 21040326617. The reversal of 21040326594 is 49562304012.

It is a happy number.

21040326594 is a `hidden beast` number, since 2 + 1 + 0 + 40 + 3 + 26 + 594 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 102894 + ... + 229494.

It is an arithmetic number, because the mean of its divisors is an integer number (1086245160).

Almost surely, 2^21040326594 is an apocalyptic number.

21040326594 is an abundant number, since it is smaller than the sum of its proper divisors (31099441086).

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

21040326594 is a wasteful number, since it uses less digits than its factorization.

21040326594 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127935 (or 127932 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The spelling of 21040326594 in words is "twenty-one billion, forty million, three hundred twenty-six thousand, five hundred ninety-four".