201564946258 has 16 divisors (see below), whose sum is σ = 342742014720. Its totient is φ = 88133660496.

The previous prime is 201564946249. The next prime is 201564946279. The reversal of 201564946258 is 852649465102.

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, 204012610 + ... + 204013597.

It is an arithmetic number, because the mean of its divisors is an integer number (21421375920).

Almost surely, 2^201564946258 is an apocalyptic number.

201564946258 is a deficient number, since it is larger than the sum of its proper divisors (141177068462).

201564946258 is a wasteful number, since it uses less digits than its factorization.

201564946258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 408026241.

The product of its (nonzero) digits is 4147200, while the sum is 52.

The spelling of 201564946258 in words is "two hundred one billion, five hundred sixty-four million, nine hundred forty-six thousand, two hundred fifty-eight".