20421313103632 has 40 divisors (see below), whose sum is σ = 46270217740736. Its totient is φ = 8548456646016.

The previous prime is 20421313103629. The next prime is 20421313103663. The reversal of 20421313103632 is 23630131312402.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20421313103594 and 20421313103603.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2120148123 + ... + 2120157754.

Almost surely, 2^{20421313103632} is an apocalyptic number.

It is an amenable number.

20421313103632 is an abundant number, since it is smaller than the sum of its proper divisors (25848904637104).

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

20421313103632 is a wasteful number, since it uses less digits than its factorization.

20421313103632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4240305935 (or 4240305929 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 31.

The spelling of 20421313103632 in words is "twenty trillion, four hundred twenty-one billion, three hundred thirteen million, one hundred three thousand, six hundred thirty-two".