20129262427 has 2 divisors, whose sum is σ = 20129262428. Its totient is φ = 20129262426.

The previous prime is 20129262407. The next prime is 20129262463. The reversal of 20129262427 is 72426292102.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20129262427 - 2⁷ = 20129262299 is a prime.

It is not a weakly prime, because it can be changed into another prime (20129262407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10064631213 + 10064631214.

It is an arithmetic number, because the mean of its divisors is an integer number (10064631214).

Almost surely, 2^20129262427 is an apocalyptic number.

20129262427 is a deficient number, since it is larger than the sum of its proper divisors (1).

20129262427 is an equidigital number, since it uses as much as digits as its factorization.

20129262427 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48384, while the sum is 37.

The spelling of 20129262427 in words is "twenty billion, one hundred twenty-nine million, two hundred sixty-two thousand, four hundred twenty-seven".