20510577532 has 24 divisors (see below), whose sum is σ = 36275918336. Its totient is φ = 10146595248.

The previous prime is 20510577517. The next prime is 20510577547. The reversal of 20510577532 is 23577501502.

It is an interprime number because it is at equal distance from previous prime (20510577517) and next prime (20510577547).

It is a super-2 number, since 2×20510577532² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20510577491 and 20510577500.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 74863 + ... + 215929.

Almost surely, 2^20510577532 is an apocalyptic number.

It is an amenable number.

20510577532 is a deficient number, since it is larger than the sum of its proper divisors (15765340804).

20510577532 is a wasteful number, since it uses less digits than its factorization.

20510577532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141457 (or 141455 counting only the distinct ones).

The product of its (nonzero) digits is 73500, while the sum is 37.

The spelling of 20510577532 in words is "twenty billion, five hundred ten million, five hundred seventy-seven thousand, five hundred thirty-two".