20252949456 has 80 divisors (see below), whose sum is σ = 55718380224. Its totient is φ = 6317094912.

The previous prime is 20252949403. The next prime is 20252949463. The reversal of 20252949456 is 65494925202.

It is a Harshad number since it is a multiple of its sum of digits (48).

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, 69435 + ... + 212901.

Almost surely, 2^20252949456 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20252949456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27859190112).

20252949456 is an abundant number, since it is smaller than the sum of its proper divisors (35465430768).

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

20252949456 is a wasteful number, since it uses less digits than its factorization.

20252949456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143668 (or 143662 counting only the distinct ones).

The product of its (nonzero) digits is 1555200, while the sum is 48.

The spelling of 20252949456 in words is "twenty billion, two hundred fifty-two million, nine hundred forty-nine thousand, four hundred fifty-six".