201436638038142 has 32 divisors (see below), whose sum is σ = 433868224003200. Its totient is φ = 61979833165920.

The previous prime is 201436638038113. The next prime is 201436638038159. The reversal of 201436638038142 is 241830836634102.

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, 6699084 + ... + 21160127.

It is an arithmetic number, because the mean of its divisors is an integer number (13558382000100).

Almost surely, 2^{201436638038142} is an apocalyptic number.

201436638038142 is an abundant number, since it is smaller than the sum of its proper divisors (232431585965058).

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

201436638038142 is a wasteful number, since it uses less digits than its factorization.

201436638038142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27951928.

The product of its (nonzero) digits is 3981312, while the sum is 51.

The spelling of 201436638038142 in words is "two hundred one trillion, four hundred thirty-six billion, six hundred thirty-eight million, thirty-eight thousand, one hundred forty-two".