172542860818 has 8 divisors (see below), whose sum is σ = 261327051648. Its totient is φ = 85433843604.

The previous prime is 172542860783. The next prime is 172542860827. The reversal of 172542860818 is 818068245271.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 418793146 + ... + 418793557.

It is an arithmetic number, because the mean of its divisors is an integer number (32665881456).

Almost surely, 2^172542860818 is an apocalyptic number.

172542860818 is a deficient number, since it is larger than the sum of its proper divisors (88784190830).

172542860818 is a wasteful number, since it uses less digits than its factorization.

172542860818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 837586808.

The product of its (nonzero) digits is 1720320, while the sum is 52.

The spelling of 172542860818 in words is "one hundred seventy-two billion, five hundred forty-two million, eight hundred sixty thousand, eight hundred eighteen".