20752145446 has 8 divisors (see below), whose sum is σ = 32959289880. Its totient is φ = 9765715488.

The previous prime is 20752145443. The next prime is 20752145473. The reversal of 20752145446 is 64454125702.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×20752145446² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20752145399 and 20752145408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20752145441) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 305178576 + ... + 305178643.

It is an arithmetic number, because the mean of its divisors is an integer number (4119911235).

Almost surely, 2^20752145446 is an apocalyptic number.

20752145446 is a deficient number, since it is larger than the sum of its proper divisors (12207144434).

20752145446 is a wasteful number, since it uses less digits than its factorization.

20752145446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 610357238.

The product of its (nonzero) digits is 268800, while the sum is 40.

The spelling of 20752145446 in words is "twenty billion, seven hundred fifty-two million, one hundred forty-five thousand, four hundred forty-six".