20674284969 has 8 divisors (see below), whose sum is σ = 29686152832. Its totient is φ = 12722636880.

The previous prime is 20674284949. The next prime is 20674284971. The reversal of 20674284969 is 96948247602.

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

It is not a de Polignac number, because 20674284969 - 2⁵ = 20674284937 is a prime.

It is a super-2 number, since 2×20674284969² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20674284949) 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, 265054897 + ... + 265054974.

It is an arithmetic number, because the mean of its divisors is an integer number (3710769104).

Almost surely, 2^20674284969 is an apocalyptic number.

It is an amenable number.

20674284969 is a deficient number, since it is larger than the sum of its proper divisors (9011867863).

20674284969 is a wasteful number, since it uses less digits than its factorization.

20674284969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 530109887.

The product of its (nonzero) digits is 10450944, while the sum is 57.

The spelling of 20674284969 in words is "twenty billion, six hundred seventy-four million, two hundred eighty-four thousand, nine hundred sixty-nine".