20265550545 has 8 divisors (see below), whose sum is σ = 32424880896. Its totient is φ = 10808293616.

The previous prime is 20265550471. The next prime is 20265550573. The reversal of 20265550545 is 54505556202.

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

It is a cyclic number.

It is not a de Polignac number, because 20265550545 - 2¹¹ = 20265548497 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 675518337 + ... + 675518366.

It is an arithmetic number, because the mean of its divisors is an integer number (4053110112).

Almost surely, 2^20265550545 is an apocalyptic number.

It is an amenable number.

20265550545 is a deficient number, since it is larger than the sum of its proper divisors (12159330351).

20265550545 is a wasteful number, since it uses less digits than its factorization.

20265550545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1351036711.

The product of its (nonzero) digits is 300000, while the sum is 39.

The spelling of 20265550545 in words is "twenty billion, two hundred sixty-five million, five hundred fifty thousand, five hundred forty-five".