29676881509 has 4 divisors (see below), whose sum is σ = 32374779840. Its totient is φ = 26978983180.

The previous prime is 29676881491. The next prime is 29676881561. The reversal of 29676881509 is 90518867692.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 29676881509 - 2²³ = 29668492901 is a prime.

It is a super-2 number, since 2×29676881509² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29676881569) 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, 1348949149 + ... + 1348949170.

It is an arithmetic number, because the mean of its divisors is an integer number (8093694960).

Almost surely, 2^29676881509 is an apocalyptic number.

It is an amenable number.

29676881509 is a deficient number, since it is larger than the sum of its proper divisors (2697898331).

29676881509 is a wasteful number, since it uses less digits than its factorization.

29676881509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2697898330.

The product of its (nonzero) digits is 13063680, while the sum is 61.

The spelling of 29676881509 in words is "twenty-nine billion, six hundred seventy-six million, eight hundred eighty-one thousand, five hundred nine".