20062637157421 has 2 divisors, whose sum is σ = 20062637157422. Its totient is φ = 20062637157420.

The previous prime is 20062637157413. The next prime is 20062637157443. The reversal of 20062637157421 is 12475173626002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19095195738025 + 967441419396 = 4369805^2 + 983586^2 .

It is a cyclic number.

It is not a de Polignac number, because 20062637157421 - 2³ = 20062637157413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20062637157481) 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 as a sum of consecutive naturals, namely, 10031318578710 + 10031318578711.

It is an arithmetic number, because the mean of its divisors is an integer number (10031318578711).

Almost surely, 2^{20062637157421} is an apocalyptic number.

It is an amenable number.

20062637157421 is a deficient number, since it is larger than the sum of its proper divisors (1).

20062637157421 is an equidigital number, since it uses as much as digits as its factorization.

20062637157421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 846720, while the sum is 46.

The spelling of 20062637157421 in words is "twenty trillion, sixty-two billion, six hundred thirty-seven million, one hundred fifty-seven thousand, four hundred twenty-one".