20265664754 has 8 divisors (see below), whose sum is σ = 31446721260. Its totient is φ = 9783424336.

The previous prime is 20265664733. The next prime is 20265664799. The reversal of 20265664754 is 45746656202.

It can be written as a sum of positive squares in 2 ways, for example, as 19719180625 + 546484129 = 140425^2 + 23377^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 20265664699 and 20265664708.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 174703949 + ... + 174704064.

Almost surely, 2^20265664754 is an apocalyptic number.

20265664754 is a deficient number, since it is larger than the sum of its proper divisors (11181056506).

20265664754 is a wasteful number, since it uses less digits than its factorization.

20265664754 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 349408044.

The product of its (nonzero) digits is 2419200, while the sum is 47.

The spelling of 20265664754 in words is "twenty billion, two hundred sixty-five million, six hundred sixty-four thousand, seven hundred fifty-four".