20858532532 has 6 divisors (see below), whose sum is σ = 36502431938. Its totient is φ = 10429266264.

The previous prime is 20858532529. The next prime is 20858532587. The reversal of 20858532532 is 23523585802.

It can be written as a sum of positive squares in only one way, i.e., 12193901476 + 8664631056 = 110426^2 + 93084^2 .

It is a congruent number.

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 as a sum of consecutive naturals, namely, 2607316563 + ... + 2607316570.

Almost surely, 2^20858532532 is an apocalyptic number.

It is an amenable number.

20858532532 is a deficient number, since it is larger than the sum of its proper divisors (15643899406).

20858532532 is a wasteful number, since it uses less digits than its factorization.

20858532532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5214633137 (or 5214633135 counting only the distinct ones).

The product of its (nonzero) digits is 576000, while the sum is 43.

The spelling of 20858532532 in words is "twenty billion, eight hundred fifty-eight million, five hundred thirty-two thousand, five hundred thirty-two".