1573397902609 has 12 divisors (see below), whose sum is σ = 1713940615296. Its totient is φ = 1443670458672.

The previous prime is 1573397902589. The next prime is 1573397902619. The reversal of 1573397902609 is 9062097933751.

It is a de Polignac number, because none of the positive numbers 2^k-1573397902609 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1573397902619) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27846169 + ... + 27902614.

It is an arithmetic number, because the mean of its divisors is an integer number (142828384608).

Almost surely, 2^{1573397902609} is an apocalyptic number.

It is an amenable number.

1573397902609 is a deficient number, since it is larger than the sum of its proper divisors (140542712687).

1573397902609 is a wasteful number, since it uses less digits than its factorization.

1573397902609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55748976 (or 55748963 counting only the distinct ones).

The product of its (nonzero) digits is 19289340, while the sum is 61.

The spelling of 1573397902609 in words is "one trillion, five hundred seventy-three billion, three hundred ninety-seven million, nine hundred two thousand, six hundred nine".