20450315532 has 24 divisors (see below), whose sum is σ = 47764167472. Its totient is φ = 6810091200.

The previous prime is 20450315531. The next prime is 20450315533. The reversal of 20450315532 is 23551305402.

It is an interprime number because it is at equal distance from previous prime (20450315531) and next prime (20450315533).

It is a self number, because there is not a number n which added to its sum of digits gives 20450315532.

It is not an unprimeable number, because it can be changed into a prime (20450315531) 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, 822319 + ... + 846822.

Almost surely, 2^20450315532 is an apocalyptic number.

It is an amenable number.

20450315532 is an abundant number, since it is smaller than the sum of its proper divisors (27313851940).

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

20450315532 is a wasteful number, since it uses less digits than its factorization.

20450315532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1670169 (or 1670167 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 30.

The spelling of 20450315532 in words is "twenty billion, four hundred fifty million, three hundred fifteen thousand, five hundred thirty-two".