201555255354 has 32 divisors (see below), whose sum is σ = 409798283136. Its totient is φ = 66070883520.

The previous prime is 201555255353. The next prime is 201555255373. The reversal of 201555255354 is 453552555102.

It is a super-2 number, since 2×201555255354² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (201555255353) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1939299 + ... + 2040585.

It is an arithmetic number, because the mean of its divisors is an integer number (12806196348).

Almost surely, 2^201555255354 is an apocalyptic number.

201555255354 is an abundant number, since it is smaller than the sum of its proper divisors (208243027782).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

201555255354 is a wasteful number, since it uses less digits than its factorization.

201555255354 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106790.

The product of its (nonzero) digits is 750000, while the sum is 42.

The spelling of 201555255354 in words is "two hundred one billion, five hundred fifty-five million, two hundred fifty-five thousand, three hundred fifty-four".