20845774386273 has 16 divisors (see below), whose sum is σ = 27955314265536. Its totient is φ = 13816710367680.

The previous prime is 20845774386233. The next prime is 20845774386277. The reversal of 20845774386273 is 37268347754802.

It is not a de Polignac number, because 20845774386273 - 2⁴² = 16447727875169 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20845774386277) 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, 81340011 + ... + 81595887.

It is an arithmetic number, because the mean of its divisors is an integer number (1747207141596).

Almost surely, 2^{20845774386273} is an apocalyptic number.

It is an amenable number.

20845774386273 is a deficient number, since it is larger than the sum of its proper divisors (7109539879263).

20845774386273 is a wasteful number, since it uses less digits than its factorization.

20845774386273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 413024.

The product of its (nonzero) digits is 379330560, while the sum is 66.

The spelling of 20845774386273 in words is "twenty trillion, eight hundred forty-five billion, seven hundred seventy-four million, three hundred eighty-six thousand, two hundred seventy-three".