29249945985 has 16 divisors (see below), whose sum is σ = 50399907264. Its totient is φ = 14399973312.

The previous prime is 29249945957. The next prime is 29249945987. The reversal of 29249945985 is 58954994292.

It is a happy number.

It is not a de Polignac number, because 29249945985 - 2¹¹ = 29249943937 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (29249945987) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 74999667 + ... + 75000056.

It is an arithmetic number, because the mean of its divisors is an integer number (3149994204).

Almost surely, 2^29249945985 is an apocalyptic number.

It is an amenable number.

29249945985 is a deficient number, since it is larger than the sum of its proper divisors (21149961279).

29249945985 is a wasteful number, since it uses less digits than its factorization.

29249945985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149999744.

The product of its digits is 83980800, while the sum is 66.

The spelling of 29249945985 in words is "twenty-nine billion, two hundred forty-nine million, nine hundred forty-five thousand, nine hundred eighty-five".