20253770000 has 50 divisors (see below), whose sum is σ = 49036426758. Its totient is φ = 8101504000.

The previous prime is 20253769999. The next prime is 20253770003. The reversal of 20253770000 is 7735202.

It can be written as a sum of positive squares in 5 ways, for example, as 6090865936 + 14162904064 = 78044^2 + 119008^2 .

It is a tau number, because it is divible by the number of its divisors (50).

It is not an unprimeable number, because it can be changed into a prime (20253770003) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 1002689 + ... + 1022688.

Almost surely, 2^20253770000 is an apocalyptic number.

20253770000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20253770000 is an abundant number, since it is smaller than the sum of its proper divisors (28782656758).

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

20253770000 is an equidigital number, since it uses as much as digits as its factorization.

20253770000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2025405 (or 2025384 counting only the distinct ones).

The product of its (nonzero) digits is 2940, while the sum is 26.

The spelling of 20253770000 in words is "twenty billion, two hundred fifty-three million, seven hundred seventy thousand".