20482251615 has 72 divisors (see below), whose sum is σ = 41380202448. Its totient is φ = 9344885760.

The previous prime is 20482251599. The next prime is 20482251623. The reversal of 20482251615 is 51615228402.

It is not a de Polignac number, because 20482251615 - 2⁴ = 20482251599 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20482251615.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1144335 + ... + 1162095.

It is an arithmetic number, because the mean of its divisors is an integer number (574725034).

Almost surely, 2^20482251615 is an apocalyptic number.

20482251615 is an abundant number, since it is smaller than the sum of its proper divisors (20897950833).

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

20482251615 is a wasteful number, since it uses less digits than its factorization.

20482251615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18309 (or 18299 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 36.

The spelling of 20482251615 in words is "twenty billion, four hundred eighty-two million, two hundred fifty-one thousand, six hundred fifteen".