20265635654 has 16 divisors (see below), whose sum is σ = 33235822800. Its totient is φ = 9191132160.

The previous prime is 20265635653. The next prime is 20265635683. The reversal of 20265635654 is 45653656202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20265635653) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1015919 + ... + 1035674.

It is an arithmetic number, because the mean of its divisors is an integer number (2077238925).

Almost surely, 2^20265635654 is an apocalyptic number.

20265635654 is a deficient number, since it is larger than the sum of its proper divisors (12970187146).

20265635654 is a wasteful number, since it uses less digits than its factorization.

20265635654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2052055.

The product of its (nonzero) digits is 1296000, while the sum is 44.

The spelling of 20265635654 in words is "twenty billion, two hundred sixty-five million, six hundred thirty-five thousand, six hundred fifty-four".