20651322952 has 16 divisors (see below), whose sum is σ = 41699786940. Its totient is φ = 9531379776.

The previous prime is 20651322947. The next prime is 20651323009. The reversal of 20651322952 is 25922315602.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 16966104516 + 3685218436 = 130254^2 + 60706^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 99285103 + ... + 99285310.

Almost surely, 2^20651322952 is an apocalyptic number.

It is an amenable number.

20651322952 is an abundant number, since it is smaller than the sum of its proper divisors (21048463988).

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

20651322952 is a wasteful number, since it uses less digits than its factorization.

20651322952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198570432 (or 198570428 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 37.

The spelling of 20651322952 in words is "twenty billion, six hundred fifty-one million, three hundred twenty-two thousand, nine hundred fifty-two".