30129478427 has 2 divisors, whose sum is σ = 30129478428. Its totient is φ = 30129478426.

The previous prime is 30129478381. The next prime is 30129478517. The reversal of 30129478427 is 72487492103.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 30129478427 - 2¹⁶ = 30129412891 is a prime.

It is not a weakly prime, because it can be changed into another prime (30129408427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15064739213 + 15064739214.

It is an arithmetic number, because the mean of its divisors is an integer number (15064739214).

Almost surely, 2^30129478427 is an apocalyptic number.

30129478427 is a deficient number, since it is larger than the sum of its proper divisors (1).

30129478427 is an equidigital number, since it uses as much as digits as its factorization.

30129478427 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 677376, while the sum is 47.

The spelling of 30129478427 in words is "thirty billion, one hundred twenty-nine million, four hundred seventy-eight thousand, four hundred twenty-seven".