29671123986 has 32 divisors (see below), whose sum is σ = 75355236480. Its totient is φ = 8477463888.

The previous prime is 29671123921. The next prime is 29671123997. The reversal of 29671123986 is 68932117692.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39247141 + ... + 39247896.

It is an arithmetic number, because the mean of its divisors is an integer number (2354851140).

Almost surely, 2^29671123986 is an apocalyptic number.

29671123986 is an abundant number, since it is smaller than the sum of its proper divisors (45684112494).

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

29671123986 is a wasteful number, since it uses less digits than its factorization.

29671123986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78495055 (or 78495049 counting only the distinct ones).

The product of its digits is 1959552, while the sum is 54.

The spelling of 29671123986 in words is "twenty-nine billion, six hundred seventy-one million, one hundred twenty-three thousand, nine hundred eighty-six".