201115254502 has 16 divisors (see below), whose sum is σ = 305317987920. Its totient is φ = 99347910048.

The previous prime is 201115254497. The next prime is 201115254517. The reversal of 201115254502 is 205452511102.

It is a congruent number.

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, 1253673 + ... + 1404964.

It is an arithmetic number, because the mean of its divisors is an integer number (19082374245).

Almost surely, 2^201115254502 is an apocalyptic number.

201115254502 is a deficient number, since it is larger than the sum of its proper divisors (104202733418).

201115254502 is a wasteful number, since it uses less digits than its factorization.

201115254502 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2659095.

The product of its (nonzero) digits is 4000, while the sum is 28.

Adding to 201115254502 its reverse (205452511102), we get a palindrome (406567765604).

The spelling of 201115254502 in words is "two hundred one billion, one hundred fifteen million, two hundred fifty-four thousand, five hundred two".