203640644002312 has 32 divisors (see below), whose sum is σ = 418838994100800. Its totient is φ = 92052526161600.

The previous prime is 203640644002303. The next prime is 203640644002321. The reversal of 203640644002312 is 213200446046302.

It is an interprime number because it is at equal distance from previous prime (203640644002303) and next prime (203640644002321).

It is a super-2 number, since 2×203640644002312² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6392520612 + ... + 6392552467.

It is an arithmetic number, because the mean of its divisors is an integer number (13088718565650).

Almost surely, 2^{203640644002312} is an apocalyptic number.

203640644002312 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

203640644002312 is an abundant number, since it is smaller than the sum of its proper divisors (215198350098488).

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

203640644002312 is a wasteful number, since it uses less digits than its factorization.

203640644002312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12785073277 (or 12785073273 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 37.

The spelling of 203640644002312 in words is "two hundred three trillion, six hundred forty billion, six hundred forty-four million, two thousand, three hundred twelve".