20126334251645 has 8 divisors (see below), whose sum is σ = 24152531919360. Its totient is φ = 16100446856400.

The previous prime is 20126334251641. The next prime is 20126334251659. The reversal of 20126334251645 is 54615243362102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20126334251645 - 2² = 20126334251641 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20126334251596 and 20126334251605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20126334251641) 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, 77425385 + ... + 77684894.

It is an arithmetic number, because the mean of its divisors is an integer number (3019066489920).

Almost surely, 2^{20126334251645} is an apocalyptic number.

It is an amenable number.

20126334251645 is a deficient number, since it is larger than the sum of its proper divisors (4026197667715).

20126334251645 is a wasteful number, since it uses less digits than its factorization.

20126334251645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155136235.

The product of its (nonzero) digits is 1036800, while the sum is 44.

The spelling of 20126334251645 in words is "twenty trillion, one hundred twenty-six billion, three hundred thirty-four million, two hundred fifty-one thousand, six hundred forty-five".