205514963842 has 16 divisors (see below), whose sum is σ = 310183255872. Its totient is φ = 102120802960.

The previous prime is 205514963777. The next prime is 205514963851. The reversal of 205514963842 is 248369415502.

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, 1599117 + ... + 1722847.

It is an arithmetic number, because the mean of its divisors is an integer number (19386453492).

Almost surely, 2^205514963842 is an apocalyptic number.

205514963842 is a deficient number, since it is larger than the sum of its proper divisors (104668292030).

205514963842 is a wasteful number, since it uses less digits than its factorization.

205514963842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128873.

The product of its (nonzero) digits is 2073600, while the sum is 49.

The spelling of 205514963842 in words is "two hundred five billion, five hundred fourteen million, nine hundred sixty-three thousand, eight hundred forty-two".