17672578712442 has 48 divisors (see below), whose sum is σ = 38923395056520. Its totient is φ = 5793529795200.

The previous prime is 17672578712429. The next prime is 17672578712447. The reversal of 17672578712442 is 24421787527671.

It is a happy number.

17672578712442 is a `hidden beast` number, since 1 + 7 + 6 + 7 + 2 + 578 + 7 + 12 + 4 + 42 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 15538346980641 + 2134231731801 = 3941871^2 + 1460901^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 17672578712442.

It is not an unprimeable number, because it can be changed into a prime (17672578712447) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7371192 + ... + 9469932.

Almost surely, 2^{17672578712442} is an apocalyptic number.

17672578712442 is an abundant number, since it is smaller than the sum of its proper divisors (21250816344078).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

17672578712442 is a wasteful number, since it uses less digits than its factorization.

17672578712442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2106479 (or 2106476 counting only the distinct ones).

The product of its digits is 73758720, while the sum is 63.

The spelling of 17672578712442 in words is "seventeen trillion, six hundred seventy-two billion, five hundred seventy-eight million, seven hundred twelve thousand, four hundred forty-two".