20314203640 has 32 divisors (see below), whose sum is σ = 45712006560. Its totient is φ = 8124784000.

The previous prime is 20314203599. The next prime is 20314203641. The reversal of 20314203640 is 4630241302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20314203641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 431670 + ... + 476410.

It is an arithmetic number, because the mean of its divisors is an integer number (1428500205).

Almost surely, 2^20314203640 is an apocalyptic number.

20314203640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20314203640 is an abundant number, since it is smaller than the sum of its proper divisors (25397802920).

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

20314203640 is a wasteful number, since it uses less digits than its factorization.

20314203640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56103 (or 56099 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 20314203640 its reverse (4630241302), we get a palindrome (24944444942).

The spelling of 20314203640 in words is "twenty billion, three hundred fourteen million, two hundred three thousand, six hundred forty".