20262171674465 has 32 divisors (see below), whose sum is σ = 28462428124416. Its totient is φ = 13557545084160.

The previous prime is 20262171674447. The next prime is 20262171674533. The reversal of 20262171674465 is 56447617126202.

It is not a de Polignac number, because 20262171674465 - 2⁸ = 20262171674209 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5120666 + ... + 8169795.

It is an arithmetic number, because the mean of its divisors is an integer number (889450878888).

Almost surely, 2^{20262171674465} is an apocalyptic number.

It is an amenable number.

20262171674465 is a deficient number, since it is larger than the sum of its proper divisors (8200256449951).

20262171674465 is a wasteful number, since it uses less digits than its factorization.

20262171674465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13291529.

The product of its (nonzero) digits is 6773760, while the sum is 53.

The spelling of 20262171674465 in words is "twenty trillion, two hundred sixty-two billion, one hundred seventy-one million, six hundred seventy-four thousand, four hundred sixty-five".