20752224407 has 4 divisors (see below), whose sum is σ = 20753177016. Its totient is φ = 20751271800.

The previous prime is 20752224371. The next prime is 20752224443. The reversal of 20752224407 is 70442225702.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (20752224371) and next prime (20752224443).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20752224407 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20752220407) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 442844 + ... + 487457.

It is an arithmetic number, because the mean of its divisors is an integer number (5188294254).

Almost surely, 2^20752224407 is an apocalyptic number.

20752224407 is a deficient number, since it is larger than the sum of its proper divisors (952609).

20752224407 is an equidigital number, since it uses as much as digits as its factorization.

20752224407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 952608.

The product of its (nonzero) digits is 62720, while the sum is 35.

The spelling of 20752224407 in words is "twenty billion, seven hundred fifty-two million, two hundred twenty-four thousand, four hundred seven".