29749771863 has 24 divisors (see below), whose sum is σ = 49617040928. Its totient is φ = 16824609792.

The previous prime is 29749771861. The next prime is 29749771879. The reversal of 29749771863 is 36817794792.

It is not a de Polignac number, because 29749771863 - 2¹ = 29749771861 is a prime.

It is a Smith number, since the sum of its digits (63) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a self number, because there is not a number n which added to its sum of digits gives 29749771863.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29749771861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2428006 + ... + 2440227.

Almost surely, 2^29749771863 is an apocalyptic number.

29749771863 is a deficient number, since it is larger than the sum of its proper divisors (19867269065).

29749771863 is a wasteful number, since it uses less digits than its factorization.

29749771863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4868343 (or 4868340 counting only the distinct ones).

The product of its digits is 32006016, while the sum is 63.

The spelling of 29749771863 in words is "twenty-nine billion, seven hundred forty-nine million, seven hundred seventy-one thousand, eight hundred sixty-three".