20673274368 has 240 divisors, whose sum is σ = 60690776256. Its totient is φ = 6240706560.

The previous prime is 20673274367. The next prime is 20673274411. The reversal of 20673274368 is 86347237602.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (20673274367) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12752598 + ... + 12754218.

Almost surely, 2^20673274368 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20673274368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30345388128).

20673274368 is an abundant number, since it is smaller than the sum of its proper divisors (40017501888).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20673274368 is a wasteful number, since it uses less digits than its factorization.

20673274368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1703 (or 1668 counting only the distinct ones).

The product of its (nonzero) digits is 2032128, while the sum is 48.

The spelling of 20673274368 in words is "twenty billion, six hundred seventy-three million, two hundred seventy-four thousand, three hundred sixty-eight".