21240413500294 has 32 divisors (see below), whose sum is σ = 32684249774880. Its totient is φ = 10346949715200.

The previous prime is 21240413500283. The next prime is 21240413500307. The reversal of 21240413500294 is 49200531404212.

It is a super-2 number, since 2×21240413500294² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53533512 + ... + 53928820.

It is an arithmetic number, because the mean of its divisors is an integer number (1021382805465).

Almost surely, 2^{21240413500294} is an apocalyptic number.

21240413500294 is a deficient number, since it is larger than the sum of its proper divisors (11443836274586).

21240413500294 is a wasteful number, since it uses less digits than its factorization.

21240413500294 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 396936.

The product of its (nonzero) digits is 69120, while the sum is 37.

The spelling of 21240413500294 in words is "twenty-one trillion, two hundred forty billion, four hundred thirteen million, five hundred thousand, two hundred ninety-four".