20455412774403 has 16 divisors (see below), whose sum is σ = 28711488291200. Its totient is φ = 12918246405120.

The previous prime is 20455412774393. The next prime is 20455412774431. The reversal of 20455412774403 is 30447721455402.

It is a happy number.

It is not a de Polignac number, because 20455412774403 - 2⁹ = 20455412773891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20455412774603) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12583573 + ... + 14115846.

It is an arithmetic number, because the mean of its divisors is an integer number (1794468018200).

Almost surely, 2^{20455412774403} is an apocalyptic number.

20455412774403 is a deficient number, since it is larger than the sum of its proper divisors (8256075516797).

20455412774403 is a wasteful number, since it uses less digits than its factorization.

20455412774403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26712882.

The product of its (nonzero) digits is 3763200, while the sum is 48.

The spelling of 20455412774403 in words is "twenty trillion, four hundred fifty-five billion, four hundred twelve million, seven hundred seventy-four thousand, four hundred three".