29155743400172 has 6 divisors (see below), whose sum is σ = 51022550950308. Its totient is φ = 14577871700084.

The previous prime is 29155743400169. The next prime is 29155743400183. The reversal of 29155743400172 is 27100434755192.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 29155743400172.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3644467925018 + ... + 3644467925025.

It is an arithmetic number, because the mean of its divisors is an integer number (8503758491718).

Almost surely, 2^{29155743400172} is an apocalyptic number.

It is an amenable number.

29155743400172 is a deficient number, since it is larger than the sum of its proper divisors (21866807550136).

29155743400172 is a wasteful number, since it uses less digits than its factorization.

29155743400172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7288935850047 (or 7288935850045 counting only the distinct ones).

The product of its (nonzero) digits is 2116800, while the sum is 50.

The spelling of 29155743400172 in words is "twenty-nine trillion, one hundred fifty-five billion, seven hundred forty-three million, four hundred thousand, one hundred seventy-two".