20935215116394 has 32 divisors (see below), whose sum is σ = 42022369556160. Its totient is φ = 6953082757632.

The previous prime is 20935215116357. The next prime is 20935215116419. The reversal of 20935215116394 is 49361151253902.

It is a happy number.

It is a Curzon 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, 138257577 + ... + 138408915.

It is an arithmetic number, because the mean of its divisors is an integer number (1313199048630).

Almost surely, 2^{20935215116394} is an apocalyptic number.

20935215116394 is an abundant number, since it is smaller than the sum of its proper divisors (21087154439766).

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

20935215116394 is a wasteful number, since it uses less digits than its factorization.

20935215116394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234854.

The product of its (nonzero) digits is 1749600, while the sum is 51.

The spelling of 20935215116394 in words is "twenty trillion, nine hundred thirty-five billion, two hundred fifteen million, one hundred sixteen thousand, three hundred ninety-four".