29893471723 has 16 divisors (see below), whose sum is σ = 32124384000. Its totient is φ = 27733678560.

The previous prime is 29893471681. The next prime is 29893471733. The reversal of 29893471723 is 32717439892.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-29893471723 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (29893471733) 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, 126640 + ... + 275362.

It is an arithmetic number, because the mean of its divisors is an integer number (2007774000).

Almost surely, 2^29893471723 is an apocalyptic number.

29893471723 is a deficient number, since it is larger than the sum of its proper divisors (2230912277).

29893471723 is a wasteful number, since it uses less digits than its factorization.

29893471723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148962.

The product of its digits is 4572288, while the sum is 55.

The spelling of 29893471723 in words is "twenty-nine billion, eight hundred ninety-three million, four hundred seventy-one thousand, seven hundred twenty-three".