205801152842 has 16 divisors (see below), whose sum is σ = 310794767232. Its totient is φ = 102203110800.

The previous prime is 205801152811. The next prime is 205801152901. The reversal of 205801152842 is 248251108502.

It is a happy number.

It is a super-2 number, since 2×205801152842² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 205801152796 and 205801152805.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2010608 + ... + 2110484.

It is an arithmetic number, because the mean of its divisors is an integer number (19424672952).

Almost surely, 2^205801152842 is an apocalyptic number.

205801152842 is a deficient number, since it is larger than the sum of its proper divisors (104993614390).

205801152842 is a wasteful number, since it uses less digits than its factorization.

205801152842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106853.

The product of its (nonzero) digits is 51200, while the sum is 38.

The spelling of 205801152842 in words is "two hundred five billion, eight hundred one million, one hundred fifty-two thousand, eight hundred forty-two".