20620266897 has 8 divisors (see below), whose sum is σ = 27678211200. Its totient is φ = 13654583600.

The previous prime is 20620266881. The next prime is 20620266917. The reversal of 20620266897 is 79866202602.

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 20620266897 - 2⁴ = 20620266881 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20620266197) 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, 23064729 + ... + 23065622.

It is an arithmetic number, because the mean of its divisors is an integer number (3459776400).

Almost surely, 2^20620266897 is an apocalyptic number.

It is an amenable number.

20620266897 is a deficient number, since it is larger than the sum of its proper divisors (7057944303).

20620266897 is a wasteful number, since it uses less digits than its factorization.

20620266897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46130503.

The product of its (nonzero) digits is 870912, while the sum is 48.

The spelling of 20620266897 in words is "twenty billion, six hundred twenty million, two hundred sixty-six thousand, eight hundred ninety-seven".