20478750332 has 6 divisors (see below), whose sum is σ = 35837813088. Its totient is φ = 10239375164.

The previous prime is 20478750329. The next prime is 20478750353. The reversal of 20478750332 is 23305787402.

It is a super-2 number, since 2×20478750332² (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 20478750332.

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 as a sum of consecutive naturals, namely, 2559843788 + ... + 2559843795.

It is an arithmetic number, because the mean of its divisors is an integer number (5972968848).

Almost surely, 2^20478750332 is an apocalyptic number.

It is an amenable number.

20478750332 is a deficient number, since it is larger than the sum of its proper divisors (15359062756).

20478750332 is a wasteful number, since it uses less digits than its factorization.

20478750332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5119687587 (or 5119687585 counting only the distinct ones).

The product of its (nonzero) digits is 282240, while the sum is 41.

The spelling of 20478750332 in words is "twenty billion, four hundred seventy-eight million, seven hundred fifty thousand, three hundred thirty-two".