20462144387 has 2 divisors, whose sum is σ = 20462144388. Its totient is φ = 20462144386.

The previous prime is 20462144383. The next prime is 20462144393. The reversal of 20462144387 is 78344126402.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20462144387 - 2² = 20462144383 is a prime.

It is not a weakly prime, because it can be changed into another prime (20462144383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10231072193 + 10231072194.

It is an arithmetic number, because the mean of its divisors is an integer number (10231072194).

Almost surely, 2^20462144387 is an apocalyptic number.

20462144387 is a deficient number, since it is larger than the sum of its proper divisors (1).

20462144387 is an equidigital number, since it uses as much as digits as its factorization.

20462144387 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 258048, while the sum is 41.

The spelling of 20462144387 in words is "twenty billion, four hundred sixty-two million, one hundred forty-four thousand, three hundred eighty-seven".