20454751072 has 96 divisors (see below), whose sum is σ = 46667480832. Its totient is φ = 8644022784.

The previous prime is 20454751019. The next prime is 20454751081. The reversal of 20454751072 is 27015745402.

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, 16862338 + ... + 16863550.

It is an arithmetic number, because the mean of its divisors is an integer number (486119592).

Almost surely, 2^20454751072 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 20454751072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23333740416).

20454751072 is an abundant number, since it is smaller than the sum of its proper divisors (26212729760).

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

20454751072 is a wasteful number, since it uses less digits than its factorization.

20454751072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2220 (or 2212 counting only the distinct ones).

The product of its (nonzero) digits is 78400, while the sum is 37.

The spelling of 20454751072 in words is "twenty billion, four hundred fifty-four million, seven hundred fifty-one thousand, seventy-two".