201432857023155 has 16 divisors (see below), whose sum is σ = 323216045661600. Its totient is φ = 107123032270848.

The previous prime is 201432857023109. The next prime is 201432857023199. The reversal of 201432857023155 is 551320758234102.

It is a happy number.

It is not a de Polignac number, because 201432857023155 - 2⁶ = 201432857023091 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19239045102 + ... + 19239055571.

It is an arithmetic number, because the mean of its divisors is an integer number (20201002853850).

Almost surely, 2^{201432857023155} is an apocalyptic number.

201432857023155 is a deficient number, since it is larger than the sum of its proper divisors (121783188638445).

201432857023155 is a wasteful number, since it uses less digits than its factorization.

201432857023155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38478101030.

The product of its (nonzero) digits is 2016000, while the sum is 48.

The spelling of 201432857023155 in words is "two hundred one trillion, four hundred thirty-two billion, eight hundred fifty-seven million, twenty-three thousand, one hundred fifty-five".