20045278000 has 160 divisors (see below), whose sum is σ = 55987184448. Its totient is φ = 6860288000.

The previous prime is 20045277971. The next prime is 20045278009. The reversal of 20045278000 is 87254002.

It is a self number, because there is not a number n which added to its sum of digits gives 20045278000.

It is not an unprimeable number, because it can be changed into a prime (20045278009) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 347202 + ... + 400798.

Almost surely, 2^20045278000 is an apocalyptic number.

20045278000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20045278000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27993592224).

20045278000 is an abundant number, since it is smaller than the sum of its proper divisors (35941906448).

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

20045278000 is a wasteful number, since it uses less digits than its factorization.

20045278000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53648 (or 53632 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 28.

The spelling of 20045278000 in words is "twenty billion, forty-five million, two hundred seventy-eight thousand".