20445214347045 has 96 divisors (see below), whose sum is σ = 37683693815040. Its totient is φ = 10231381754880.

The previous prime is 20445214346933. The next prime is 20445214347049. The reversal of 20445214347045 is 54074341254402.

20445214347045 is a `hidden beast` number, since 2 + 0 + 4 + 4 + 521 + 43 + 47 + 0 + 45 = 666.

It is not a de Polignac number, because 20445214347045 - 2¹⁵ = 20445214314277 is a prime.

It is a super-2 number, since 2×20445214347045² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20445214347049) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 333981490 + ... + 334042700.

It is an arithmetic number, because the mean of its divisors is an integer number (392538477240).

Almost surely, 2^{20445214347045} is an apocalyptic number.

It is an amenable number.

20445214347045 is a deficient number, since it is larger than the sum of its proper divisors (17238479467995).

20445214347045 is a wasteful number, since it uses less digits than its factorization.

20445214347045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67387 (or 67384 counting only the distinct ones).

The product of its (nonzero) digits is 2150400, while the sum is 45.

The spelling of 20445214347045 in words is "twenty trillion, four hundred forty-five billion, two hundred fourteen million, three hundred forty-seven thousand, forty-five".