17406197953 has 4 divisors (see below), whose sum is σ = 17506811988. Its totient is φ = 17305583920.

The previous prime is 17406197917. The next prime is 17406197981. The reversal of 17406197953 is 35979160471.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7855631424 + 9550566529 = 88632^2 + 97727^2 .

It is a cyclic number.

It is not a de Polignac number, because 17406197953 - 2²¹ = 17404100801 is a prime.

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 17406197953.

It is not an unprimeable number, because it can be changed into a prime (17406197153) 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, 50306758 + ... + 50307103.

It is an arithmetic number, because the mean of its divisors is an integer number (4376702997).

Almost surely, 2^17406197953 is an apocalyptic number.

It is an amenable number.

17406197953 is a deficient number, since it is larger than the sum of its proper divisors (100614035).

17406197953 is a wasteful number, since it uses less digits than its factorization.

17406197953 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100614034.

The product of its (nonzero) digits is 1428840, while the sum is 52.

The spelling of 17406197953 in words is "seventeen billion, four hundred six million, one hundred ninety-seven thousand, nine hundred fifty-three".