20751513822253 has 8 divisors (see below), whose sum is σ = 20802467303288. Its totient is φ = 20700620043264.

The previous prime is 20751513822251. The next prime is 20751513822283. The reversal of 20751513822253 is 35222831515702.

It can be written as a sum of positive squares in 4 ways, for example, as 3763374963364 + 16988138858889 = 1939942^2 + 4121667^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 20751513822253 - 2¹ = 20751513822251 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 (20751513822251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14229450 + ... + 15619867.

It is an arithmetic number, because the mean of its divisors is an integer number (2600308412911).

Almost surely, 2^{20751513822253} is an apocalyptic number.

It is an amenable number.

20751513822253 is a deficient number, since it is larger than the sum of its proper divisors (50953481035).

20751513822253 is a wasteful number, since it uses less digits than its factorization.

20751513822253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29851023.

The product of its (nonzero) digits is 1008000, while the sum is 46.

The spelling of 20751513822253 in words is "twenty trillion, seven hundred fifty-one billion, five hundred thirteen million, eight hundred twenty-two thousand, two hundred fifty-three".