20255553454140 has 72 divisors (see below), whose sum is σ = 61442248908768. Its totient is φ = 5401445454720.

The previous prime is 20255553454139. The next prime is 20255553454153. The reversal of 20255553454140 is 4145435555202.

20255553454140 is a `hidden beast` number, since 2 + 0 + 2 + 5 + 5 + 5 + 53 + 454 + 140 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 38377230 + ... + 38901450.

Almost surely, 2^{20255553454140} is an apocalyptic number.

20255553454140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20255553454140 is an abundant number, since it is smaller than the sum of its proper divisors (41186695454628).

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

20255553454140 is a wasteful number, since it uses less digits than its factorization.

20255553454140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 738899 (or 738894 counting only the distinct ones).

The product of its (nonzero) digits is 2400000, while the sum is 45.

The spelling of 20255553454140 in words is "twenty trillion, two hundred fifty-five billion, five hundred fifty-three million, four hundred fifty-four thousand, one hundred forty".