20354464400445 has 96 divisors (see below), whose sum is σ = 40573127162880. Its totient is φ = 9246941130240.

The previous prime is 20354464400429. The next prime is 20354464400477. The reversal of 20354464400445 is 54400446445302.

20354464400445 is a `hidden beast` number, since 2 + 0 + 3 + 544 + 64 + 4 + 0 + 0 + 4 + 45 = 666.

It is not a de Polignac number, because 20354464400445 - 2⁴ = 20354464400429 is a prime.

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

It is a self number, because there is not a number n which added to its sum of digits gives 20354464400445.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 33337260 + ... + 33942330.

It is an arithmetic number, because the mean of its divisors is an integer number (422636741280).

Almost surely, 2^{20354464400445} is an apocalyptic number.

It is an amenable number.

20354464400445 is a deficient number, since it is larger than the sum of its proper divisors (20218662762435).

20354464400445 is a wasteful number, since it uses less digits than its factorization.

20354464400445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 605755 (or 605752 counting only the distinct ones).

The product of its (nonzero) digits is 3686400, while the sum is 45.

The spelling of 20354464400445 in words is "twenty trillion, three hundred fifty-four billion, four hundred sixty-four million, four hundred thousand, four hundred forty-five".