201552978055 has 16 divisors (see below), whose sum is σ = 284147416224. Its totient is φ = 135308292480.

The previous prime is 201552978047. The next prime is 201552978073. The reversal of 201552978055 is 550879255102.

It is not a de Polignac number, because 201552978055 - 2³ = 201552978047 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 140945424 + ... + 140946853.

It is an arithmetic number, because the mean of its divisors is an integer number (17759213514).

Almost surely, 2^201552978055 is an apocalyptic number.

201552978055 is a deficient number, since it is larger than the sum of its proper divisors (82594438169).

201552978055 is a wasteful number, since it uses less digits than its factorization.

201552978055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281892306.

The product of its (nonzero) digits is 1260000, while the sum is 49.

The spelling of 201552978055 in words is "two hundred one billion, five hundred fifty-two million, nine hundred seventy-eight thousand, fifty-five".