20964671952 has 60 divisors (see below), whose sum is σ = 63000985536. Its totient is φ = 5989905600.

The previous prime is 20964671927. The next prime is 20964671999. The reversal of 20964671952 is 25917646902.

It is a junction number, because it is equal to n+sod(n) for n = 20964671895 and 20964671904.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4454424 + ... + 4459127.

Almost surely, 2^20964671952 is an apocalyptic number.

It is an amenable number.

20964671952 is an abundant number, since it is smaller than the sum of its proper divisors (42036313584).

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

20964671952 is a wasteful number, since it uses less digits than its factorization.

20964671952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8913576 (or 8913563 counting only the distinct ones).

The product of its (nonzero) digits is 1632960, while the sum is 51.

The spelling of 20964671952 in words is "twenty billion, nine hundred sixty-four million, six hundred seventy-one thousand, nine hundred fifty-two".