172842858749 has 8 divisors (see below), whose sum is σ = 188559493920. Its totient is φ = 157126831600.

The previous prime is 172842858623. The next prime is 172842858827. The reversal of 172842858749 is 947858248271.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-172842858749 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172842828749) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 607334 + ... + 845304.

It is an arithmetic number, because the mean of its divisors is an integer number (23569936740).

Almost surely, 2^172842858749 is an apocalyptic number.

It is an amenable number.

172842858749 is a deficient number, since it is larger than the sum of its proper divisors (15716635171).

172842858749 is a wasteful number, since it uses less digits than its factorization.

172842858749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304011.

The product of its digits is 72253440, while the sum is 65.

The spelling of 172842858749 in words is "one hundred seventy-two billion, eight hundred forty-two million, eight hundred fifty-eight thousand, seven hundred forty-nine".