20642360524 has 24 divisors (see below), whose sum is σ = 36191603840. Its totient is φ = 10301924736.

The previous prime is 20642360509. The next prime is 20642360561. The reversal of 20642360524 is 42506324602.

It is a super-2 number, since 2×20642360524² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20642360524.

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, 7075114 + ... + 7078030.

Almost surely, 2^20642360524 is an apocalyptic number.

It is an amenable number.

20642360524 is a deficient number, since it is larger than the sum of its proper divisors (15549243316).

20642360524 is a wasteful number, since it uses less digits than its factorization.

20642360524 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5617 (or 5615 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 34.

The spelling of 20642360524 in words is "twenty billion, six hundred forty-two million, three hundred sixty thousand, five hundred twenty-four".