30129881759 has 4 divisors (see below), whose sum is σ = 30281288400. Its totient is φ = 29978475120.

The previous prime is 30129881741. The next prime is 30129881767. The reversal of 30129881759 is 95718892103.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30129881759 is a prime.

It is a super-2 number, since 2×30129881759² (a number of 22 digits) contains 22 as substring.

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 30129881759.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30129881059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 75703022 + ... + 75703419.

It is an arithmetic number, because the mean of its divisors is an integer number (7570322100).

Almost surely, 2^30129881759 is an apocalyptic number.

30129881759 is a deficient number, since it is larger than the sum of its proper divisors (151406641).

30129881759 is a wasteful number, since it uses less digits than its factorization.

30129881759 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151406640.

The product of its (nonzero) digits is 1088640, while the sum is 53.

The spelling of 30129881759 in words is "thirty billion, one hundred twenty-nine million, eight hundred eighty-one thousand, seven hundred fifty-nine".