29139421016 has 32 divisors (see below), whose sum is σ = 55198098000. Its totient is φ = 14420622720.

The previous prime is 29139420997. The next prime is 29139421021. The reversal of 29139421016 is 61012493192.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 294146 + ... + 380526.

Almost surely, 2^29139421016 is an apocalyptic number.

It is an amenable number.

29139421016 is a deficient number, since it is larger than the sum of its proper divisors (26058676984).

29139421016 is a wasteful number, since it uses less digits than its factorization.

29139421016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86819 (or 86815 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 38.

The spelling of 29139421016 in words is "twenty-nine billion, one hundred thirty-nine million, four hundred twenty-one thousand, sixteen".