29640255479999 has 8 divisors (see below), whose sum is σ = 30471368752128. Its totient is φ = 28817495105400.

The previous prime is 29640255479993. The next prime is 29640255480013. The reversal of 29640255479999 is 99997455204692.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-29640255479999 is a prime.

It is a super-2 number, since 2×29640255479999² (a number of 28 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 (29640255479993) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2088217187 + ... + 2088231380.

It is an arithmetic number, because the mean of its divisors is an integer number (3808921094016).

Almost surely, 2^{29640255479999} is an apocalyptic number.

29640255479999 is a deficient number, since it is larger than the sum of its proper divisors (831113272129).

29640255479999 is a wasteful number, since it uses less digits than its factorization.

29640255479999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4176448765.

The product of its (nonzero) digits is 3968092800, while the sum is 80.

The spelling of 29640255479999 in words is "twenty-nine trillion, six hundred forty billion, two hundred fifty-five million, four hundred seventy-nine thousand, nine hundred ninety-nine".