172028551042 has 8 divisors (see below), whose sum is σ = 258044608332. Its totient is φ = 86013681600.

The previous prime is 172028551033. The next prime is 172028551043. The reversal of 172028551042 is 240155820271.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 135623529441 + 36405021601 = 368271^2 + 190801^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 172028550992 and 172028551010.

It is not an unprimeable number, because it can be changed into a prime (172028551043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 328942 + ... + 672502.

Almost surely, 2^172028551042 is an apocalyptic number.

172028551042 is a deficient number, since it is larger than the sum of its proper divisors (86016057290).

172028551042 is a wasteful number, since it uses less digits than its factorization.

172028551042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 593924.

The product of its (nonzero) digits is 44800, while the sum is 37.

The spelling of 172028551042 in words is "one hundred seventy-two billion, twenty-eight million, five hundred fifty-one thousand, forty-two".