20512163374 has 32 divisors (see below), whose sum is σ = 33158160000. Its totient is φ = 9487345824.

The previous prime is 20512163363. The next prime is 20512163377. The reversal of 20512163374 is 47336121502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20512163377) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 303357 + ... + 364759.

It is an arithmetic number, because the mean of its divisors is an integer number (1036192500).

Almost surely, 2^20512163374 is an apocalyptic number.

20512163374 is a deficient number, since it is larger than the sum of its proper divisors (12645996626).

20512163374 is a wasteful number, since it uses less digits than its factorization.

20512163374 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61632.

The product of its (nonzero) digits is 30240, while the sum is 34.

Adding to 20512163374 its reverse (47336121502), we get a palindrome (67848284876).

The spelling of 20512163374 in words is "twenty billion, five hundred twelve million, one hundred sixty-three thousand, three hundred seventy-four".