172491202474 has 8 divisors (see below), whose sum is σ = 273956615748. Its totient is φ = 81172330560.

The previous prime is 172491202463. The next prime is 172491202501. The reversal of 172491202474 is 474202194271.

172491202474 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 172189311849 + 301890625 = 414957^2 + 17375^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 172491202474.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2536635297 + ... + 2536635364.

Almost surely, 2^172491202474 is an apocalyptic number.

172491202474 is a deficient number, since it is larger than the sum of its proper divisors (101465413274).

172491202474 is a wasteful number, since it uses less digits than its factorization.

172491202474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5073270680.

The product of its (nonzero) digits is 225792, while the sum is 43.

The spelling of 172491202474 in words is "one hundred seventy-two billion, four hundred ninety-one million, two hundred two thousand, four hundred seventy-four".