20262639262645 has 32 divisors (see below), whose sum is σ = 26250772891392. Its totient is φ = 14925933614592.

The previous prime is 20262639262637. The next prime is 20262639262661. The reversal of 20262639262645 is 54626293626202.

It is not a de Polignac number, because 20262639262645 - 2³ = 20262639262637 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 127280737 + ... + 127439833.

It is an arithmetic number, because the mean of its divisors is an integer number (820336652856).

Almost surely, 2^{20262639262645} is an apocalyptic number.

It is an amenable number.

20262639262645 is a deficient number, since it is larger than the sum of its proper divisors (5988133628747).

20262639262645 is a wasteful number, since it uses less digits than its factorization.

20262639262645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163981.

The product of its (nonzero) digits is 22394880, while the sum is 55.

The spelling of 20262639262645 in words is "twenty trillion, two hundred sixty-two billion, six hundred thirty-nine million, two hundred sixty-two thousand, six hundred forty-five".