20566992370 has 8 divisors (see below), whose sum is σ = 37020586284. Its totient is φ = 8226796944.

The previous prime is 20566992359. The next prime is 20566992389. The reversal of 20566992370 is 7329966502.

It can be written as a sum of positive squares in 2 ways, for example, as 20480185881 + 86806489 = 143109^2 + 9317^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1028349609 + ... + 1028349628.

Almost surely, 2^20566992370 is an apocalyptic number.

20566992370 is a deficient number, since it is larger than the sum of its proper divisors (16453593914).

20566992370 is a wasteful number, since it uses less digits than its factorization.

20566992370 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2056699244.

The product of its (nonzero) digits is 1224720, while the sum is 49.

The spelling of 20566992370 in words is "twenty billion, five hundred sixty-six million, nine hundred ninety-two thousand, three hundred seventy".