20493008525970 has 48 divisors (see below), whose sum is σ = 53452051704792. Its totient is φ = 5447342833920.

The previous prime is 20493008525917. The next prime is 20493008525993. The reversal of 20493008525970 is 7952580039402.

20493008525970 is a `hidden beast` number, since 2 + 0 + 4 + 9 + 300 + 85 + 259 + 7 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 14580247291281 + 5912761234689 = 3818409^2 + 2431617^2 .

It is a super-2 number, since 2×20493008525970² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 363710001 + ... + 363766340.

Almost surely, 2^{20493008525970} is an apocalyptic number.

20493008525970 is an abundant number, since it is smaller than the sum of its proper divisors (32959043178822).

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

20493008525970 is a wasteful number, since it uses less digits than its factorization.

20493008525970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 727476667 (or 727476664 counting only the distinct ones).

The product of its (nonzero) digits is 5443200, while the sum is 54.

The spelling of 20493008525970 in words is "twenty trillion, four hundred ninety-three billion, eight million, five hundred twenty-five thousand, nine hundred seventy".