30139892251 has 4 divisors (see below), whose sum is σ = 34445591152. Its totient is φ = 25834193352.

The previous prime is 30139892227. The next prime is 30139892267. The reversal of 30139892251 is 15229893103.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 30139892251 - 2¹⁹ = 30139367963 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 30139892198 and 30139892207.

It is not an unprimeable number, because it can be changed into a prime (30139892351) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2152849440 + ... + 2152849453.

It is an arithmetic number, because the mean of its divisors is an integer number (8611397788).

Almost surely, 2^30139892251 is an apocalyptic number.

30139892251 is a deficient number, since it is larger than the sum of its proper divisors (4305698901).

30139892251 is an equidigital number, since it uses as much as digits as its factorization.

30139892251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4305698900.

The product of its (nonzero) digits is 116640, while the sum is 43.

The spelling of 30139892251 in words is "thirty billion, one hundred thirty-nine million, eight hundred ninety-two thousand, two hundred fifty-one".