29679955809 has 16 divisors (see below), whose sum is σ = 45398572032. Its totient is φ = 16895485008.

The previous prime is 29679955793. The next prime is 29679955813. The reversal of 29679955809 is 90855997692.

It is not a de Polignac number, because 29679955809 - 2⁴ = 29679955793 is a prime.

It is not an unprimeable number, because it can be changed into a prime (29679955829) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2681419 + ... + 2692464.

It is an arithmetic number, because the mean of its divisors is an integer number (2837410752).

Almost surely, 2^29679955809 is an apocalyptic number.

It is an amenable number.

29679955809 is a deficient number, since it is larger than the sum of its proper divisors (15718616223).

29679955809 is a wasteful number, since it uses less digits than its factorization.

29679955809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5374156.

The product of its (nonzero) digits is 110224800, while the sum is 69.

The spelling of 29679955809 in words is "twenty-nine billion, six hundred seventy-nine million, nine hundred fifty-five thousand, eight hundred nine".