29978413794589 has 8 divisors (see below), whose sum is σ = 32303336488920. Its totient is φ = 27656189795136.

The previous prime is 29978413794583. The next prime is 29978413794613. The reversal of 29978413794589 is 98549731487992.

It can be written as a sum of positive squares in 4 ways, for example, as 3345486090489 + 26632927704100 = 1829067^2 + 5160710^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 29978413794589 - 2²⁵ = 29978380240157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29978413794583) 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, 674650642 + ... + 674695075.

It is an arithmetic number, because the mean of its divisors is an integer number (4037917061115).

Almost surely, 2^{29978413794589} is an apocalyptic number.

It is an amenable number.

29978413794589 is a deficient number, since it is larger than the sum of its proper divisors (2324922694331).

29978413794589 is a wasteful number, since it uses less digits than its factorization.

29978413794589 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1349347439.

The product of its digits is 9876142080, while the sum is 85.

The spelling of 29978413794589 in words is "twenty-nine trillion, nine hundred seventy-eight billion, four hundred thirteen million, seven hundred ninety-four thousand, five hundred eighty-nine".