20676288016 has 10 divisors (see below), whose sum is σ = 40060308062. Its totient is φ = 10338144000.

The previous prime is 20676288011. The next prime is 20676288041. The reversal of 20676288016 is 61088267602.

It can be written as a sum of positive squares in only one way, i.e., 11490982416 + 9185305600 = 107196^2 + 95840^2 .

It is a super-2 number, since 2×20676288016² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20676288011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 646133985 + ... + 646134016.

Almost surely, 2^20676288016 is an apocalyptic number.

It is an amenable number.

20676288016 is a deficient number, since it is larger than the sum of its proper divisors (19384020046).

20676288016 is a wasteful number, since it uses less digits than its factorization.

20676288016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1292268009 (or 1292268003 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 46.

The spelling of 20676288016 in words is "twenty billion, six hundred seventy-six million, two hundred eighty-eight thousand, sixteen".