20238686395242 has 64 divisors (see below), whose sum is σ = 49002786100224. Its totient is φ = 5439917664000.

The previous prime is 20238686395241. The next prime is 20238686395309. The reversal of 20238686395242 is 24259368683202.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (20238686395241) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4688988 + ... + 7903415.

It is an arithmetic number, because the mean of its divisors is an integer number (765668532816).

Almost surely, 2^{20238686395242} is an apocalyptic number.

20238686395242 is an abundant number, since it is smaller than the sum of its proper divisors (28764099704982).

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

20238686395242 is a wasteful number, since it uses less digits than its factorization.

20238686395242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12594683.

The product of its (nonzero) digits is 59719680, while the sum is 60.

The spelling of 20238686395242 in words is "twenty trillion, two hundred thirty-eight billion, six hundred eighty-six million, three hundred ninety-five thousand, two hundred forty-two".