20386755252137 has 4 divisors (see below), whose sum is σ = 20860865839440. Its totient is φ = 19912644664836.

The previous prime is 20386755252133. The next prime is 20386755252251. The reversal of 20386755252137 is 73125255768302.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20386755252137 - 2² = 20386755252133 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20386755252133) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 237055293587 + ... + 237055293672.

It is an arithmetic number, because the mean of its divisors is an integer number (5215216459860).

Almost surely, 2^{20386755252137} is an apocalyptic number.

It is an amenable number.

20386755252137 is a deficient number, since it is larger than the sum of its proper divisors (474110587303).

20386755252137 is an equidigital number, since it uses as much as digits as its factorization.

20386755252137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 474110587302.

The product of its (nonzero) digits is 21168000, while the sum is 56.

The spelling of 20386755252137 in words is "twenty trillion, three hundred eighty-six billion, seven hundred fifty-five million, two hundred fifty-two thousand, one hundred thirty-seven".