20738707507388 has 24 divisors (see below), whose sum is σ = 39084913449120. Its totient is φ = 9571606776000.

The previous prime is 20738707507381. The next prime is 20738707507403. The reversal of 20738707507388 is 88370570783702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20738707507381) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 2745638 + ... + 7001138.

It is an arithmetic number, because the mean of its divisors is an integer number (1628538060380).

Almost surely, 2^{20738707507388} is an apocalyptic number.

It is an amenable number.

20738707507388 is a deficient number, since it is larger than the sum of its proper divisors (18346205941732).

20738707507388 is a wasteful number, since it uses less digits than its factorization.

20738707507388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4349237 (or 4349235 counting only the distinct ones).

The product of its (nonzero) digits is 110638080, while the sum is 65.

The spelling of 20738707507388 in words is "twenty trillion, seven hundred thirty-eight billion, seven hundred seven million, five hundred seven thousand, three hundred eighty-eight".