20769458145 has 8 divisors (see below), whose sum is σ = 33231133056. Its totient is φ = 11077044336.

The previous prime is 20769458141. The next prime is 20769458209. The reversal of 20769458145 is 54185496702.

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

It is not a de Polignac number, because 20769458145 - 2² = 20769458141 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20769458141) 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, 692315257 + ... + 692315286.

It is an arithmetic number, because the mean of its divisors is an integer number (4153891632).

Almost surely, 2^20769458145 is an apocalyptic number.

It is an amenable number.

20769458145 is a deficient number, since it is larger than the sum of its proper divisors (12461674911).

20769458145 is a wasteful number, since it uses less digits than its factorization.

20769458145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1384630551.

The product of its (nonzero) digits is 2419200, while the sum is 51.

The spelling of 20769458145 in words is "twenty billion, seven hundred sixty-nine million, four hundred fifty-eight thousand, one hundred forty-five".