20772627251 has 2 divisors, whose sum is σ = 20772627252. Its totient is φ = 20772627250.

The previous prime is 20772627223. The next prime is 20772627259. The reversal of 20772627251 is 15272627702.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20772627251 - 2¹⁴ = 20772610867 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 20772627199 and 20772627208.

It is not a weakly prime, because it can be changed into another prime (20772627259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10386313625 + 10386313626.

It is an arithmetic number, because the mean of its divisors is an integer number (10386313626).

Almost surely, 2^20772627251 is an apocalyptic number.

20772627251 is a deficient number, since it is larger than the sum of its proper divisors (1).

20772627251 is an equidigital number, since it uses as much as digits as its factorization.

20772627251 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 164640, while the sum is 41.

The spelling of 20772627251 in words is "twenty billion, seven hundred seventy-two million, six hundred twenty-seven thousand, two hundred fifty-one".