205554520250142 has 64 divisors (see below), whose sum is σ = 491398938455040. Its totient is φ = 56046652890624.

The previous prime is 205554520250137. The next prime is 205554520250179. The reversal of 205554520250142 is 241052025455502.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 205554520250094 and 205554520250103.

It is a congruent 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, 245296917 + ... + 246133472.

It is an arithmetic number, because the mean of its divisors is an integer number (7678108413360).

Almost surely, 2^{205554520250142} is an apocalyptic number.

205554520250142 is an abundant number, since it is smaller than the sum of its proper divisors (285844418204898).

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

205554520250142 is a wasteful number, since it uses less digits than its factorization.

205554520250142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 491430857.

The product of its (nonzero) digits is 800000, while the sum is 42.

The spelling of 205554520250142 in words is "two hundred five trillion, five hundred fifty-four billion, five hundred twenty million, two hundred fifty thousand, one hundred forty-two".