30135426257 has 4 divisors (see below), whose sum is σ = 30433796916. Its totient is φ = 29837055600.

The previous prime is 30135426239. The next prime is 30135426259. The reversal of 30135426257 is 75262453103.

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

It can be written as a sum of positive squares in 2 ways, for example, as 22699640896 + 7435785361 = 150664^2 + 86231^2 .

It is a cyclic number.

It is not a de Polignac number, because 30135426257 - 2¹⁶ = 30135360721 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 30135426257.

It is not an unprimeable number, because it can be changed into a prime (30135426259) 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, 149185178 + ... + 149185379.

It is an arithmetic number, because the mean of its divisors is an integer number (7608449229).

Almost surely, 2^30135426257 is an apocalyptic number.

It is an amenable number.

30135426257 is a deficient number, since it is larger than the sum of its proper divisors (298370659).

30135426257 is a wasteful number, since it uses less digits than its factorization.

30135426257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 298370658.

The product of its (nonzero) digits is 151200, while the sum is 38.

The spelling of 30135426257 in words is "thirty billion, one hundred thirty-five million, four hundred twenty-six thousand, two hundred fifty-seven".