21725360204470 has 16 divisors (see below), whose sum is σ = 42113775165840. Its totient is φ = 8021671460064.

The previous prime is 21725360204467. The next prime is 21725360204477. The reversal of 21725360204470 is 7440206352712.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21725360204477) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 83559077580 + ... + 83559077839.

It is an arithmetic number, because the mean of its divisors is an integer number (2632110947865).

Almost surely, 2^{21725360204470} is an apocalyptic number.

21725360204470 is a deficient number, since it is larger than the sum of its proper divisors (20388414961370).

21725360204470 is a wasteful number, since it uses less digits than its factorization.

21725360204470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167118155439.

The product of its (nonzero) digits is 564480, while the sum is 43.

The spelling of 21725360204470 in words is "twenty-one trillion, seven hundred twenty-five billion, three hundred sixty million, two hundred four thousand, four hundred seventy".