201391593834 has 16 divisors (see below), whose sum is σ = 412150239072. Its totient is φ = 65569356048.

The previous prime is 201391593827. The next prime is 201391593853. The reversal of 201391593834 is 438395193102.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 390293529 + ... + 390294044.

It is an arithmetic number, because the mean of its divisors is an integer number (25759389942).

Almost surely, 2^201391593834 is an apocalyptic number.

201391593834 is an abundant number, since it is smaller than the sum of its proper divisors (210758645238).

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

201391593834 is a wasteful number, since it uses less digits than its factorization.

201391593834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 780587621.

The product of its (nonzero) digits is 699840, while the sum is 48.

The spelling of 201391593834 in words is "two hundred one billion, three hundred ninety-one million, five hundred ninety-three thousand, eight hundred thirty-four".