20255147429280 has 192 divisors, whose sum is σ = 65557385582976. Its totient is φ = 5253709824000.

The previous prime is 20255147429249. The next prime is 20255147429369. The reversal of 20255147429280 is 8292474155202.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4959360 + ... + 8068800.

It is an arithmetic number, because the mean of its divisors is an integer number (341444716578).

Almost surely, 2^{20255147429280} is an apocalyptic number.

20255147429280 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 20255147429280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32778692791488).

20255147429280 is an abundant number, since it is smaller than the sum of its proper divisors (45302238153696).

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

20255147429280 is a wasteful number, since it uses less digits than its factorization.

20255147429280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3109831 (or 3109823 counting only the distinct ones).

The product of its (nonzero) digits is 3225600, while the sum is 51.

The spelling of 20255147429280 in words is "twenty trillion, two hundred fifty-five billion, one hundred forty-seven million, four hundred twenty-nine thousand, two hundred eighty".