20374142391 has 6 divisors (see below), whose sum is σ = 29429316800. Its totient is φ = 13582761588.

The previous prime is 20374142363. The next prime is 20374142419. The reversal of 20374142391 is 19324147302.

It is a happy number.

20374142391 is a `hidden beast` number, since 2 + 0 + 3 + 7 + 414 + 239 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (20374142363) and next prime (20374142419).

It is not a de Polignac number, because 20374142391 - 2¹⁰ = 20374141367 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20374142311) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1131896791 + ... + 1131896808.

Almost surely, 2^20374142391 is an apocalyptic number.

20374142391 is a deficient number, since it is larger than the sum of its proper divisors (9055174409).

20374142391 is a wasteful number, since it uses less digits than its factorization.

20374142391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2263793605 (or 2263793602 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

Adding to 20374142391 its reverse (19324147302), we get a palindrome (39698289693).

The spelling of 20374142391 in words is "twenty billion, three hundred seventy-four million, one hundred forty-two thousand, three hundred ninety-one".