17642061361 has 8 divisors (see below), whose sum is σ = 17688833864. Its totient is φ = 17595325440.

The previous prime is 17642061251. The next prime is 17642061377. The reversal of 17642061361 is 16316024671.

It can be written as a sum of positive squares in 4 ways, for example, as 495730225 + 17146331136 = 22265^2 + 130944^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 17642061361 - 2³¹ = 15494577713 is a prime.

It is a super-2 number, since 2×17642061361² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 17642061361.

It is not an unprimeable number, because it can be changed into a prime (17642061061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1144441 + ... + 1159753.

It is an arithmetic number, because the mean of its divisors is an integer number (2211104233).

Almost surely, 2^17642061361 is an apocalyptic number.

It is an amenable number.

17642061361 is a deficient number, since it is larger than the sum of its proper divisors (46772503).

17642061361 is a wasteful number, since it uses less digits than its factorization.

17642061361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18291.

The product of its (nonzero) digits is 36288, while the sum is 37.

The spelling of 17642061361 in words is "seventeen billion, six hundred forty-two million, sixty-one thousand, three hundred sixty-one".