20868348680940 has 48 divisors (see below), whose sum is σ = 58449045860352. Its totient is φ = 5563210166976.

The previous prime is 20868348680939. The next prime is 20868348680969. The reversal of 20868348680940 is 4908684386802.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52387884 + ... + 52784723.

It is an arithmetic number, because the mean of its divisors is an integer number (1217688455424).

Almost surely, 2^{20868348680940} is an apocalyptic number.

20868348680940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20868348680940 is an abundant number, since it is smaller than the sum of its proper divisors (37580697179412).

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

20868348680940 is a wasteful number, since it uses less digits than its factorization.

20868348680940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105175926 (or 105175924 counting only the distinct ones).

The product of its (nonzero) digits is 127401984, while the sum is 66.

The spelling of 20868348680940 in words is "twenty trillion, eight hundred sixty-eight billion, three hundred forty-eight million, six hundred eighty thousand, nine hundred forty".