29474993478 has 64 divisors (see below), whose sum is σ = 68214804480. Its totient is φ = 8316244992.

The previous prime is 29474993467. The next prime is 29474993479. The reversal of 29474993478 is 87439947492.

It is a Smith number, since the sum of its digits (66) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29474993479) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3221326 + ... + 3230462.

It is an arithmetic number, because the mean of its divisors is an integer number (1065856320).

Almost surely, 2^29474993478 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 29474993478, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34107402240).

29474993478 is an abundant number, since it is smaller than the sum of its proper divisors (38739811002).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

29474993478 is a wasteful number, since it uses less digits than its factorization.

29474993478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10101.

The product of its digits is 109734912, while the sum is 66.

The spelling of 29474993478 in words is "twenty-nine billion, four hundred seventy-four million, nine hundred ninety-three thousand, four hundred seventy-eight".