201534208154 has 16 divisors (see below), whose sum is σ = 310439589120. Its totient is φ = 98090275920.

The previous prime is 201534208151. The next prime is 201534208163. The reversal of 201534208154 is 451802435102.

It is not an unprimeable number, because it can be changed into a prime (201534208151) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8971409 + ... + 8993844.

It is an arithmetic number, because the mean of its divisors is an integer number (19402474320).

Almost surely, 2^201534208154 is an apocalyptic number.

201534208154 is a deficient number, since it is larger than the sum of its proper divisors (108905380966).

201534208154 is a wasteful number, since it uses less digits than its factorization.

201534208154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17965405.

The product of its (nonzero) digits is 38400, while the sum is 35.

The spelling of 201534208154 in words is "two hundred one billion, five hundred thirty-four million, two hundred eight thousand, one hundred fifty-four".