19497786339559 has 12 divisors (see below), whose sum is σ = 21467961316872. Its totient is φ = 17695063889360.

The previous prime is 19497786339557. The next prime is 19497786339583. The reversal of 19497786339559 is 95593368779491.

It is not a de Polignac number, because 19497786339559 - 2¹ = 19497786339557 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19497786339557) 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, 137185132 + ... + 137327185.

It is an arithmetic number, because the mean of its divisors is an integer number (1788996776406).

Almost surely, 2^{19497786339559} is an apocalyptic number.

19497786339559 is a deficient number, since it is larger than the sum of its proper divisors (1970174977313).

19497786339559 is a wasteful number, since it uses less digits than its factorization.

19497786339559 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 274512926 (or 274512915 counting only the distinct ones).

The product of its digits is 13888324800, while the sum is 85.

The spelling of 19497786339559 in words is "nineteen trillion, four hundred ninety-seven billion, seven hundred eighty-six million, three hundred thirty-nine thousand, five hundred fifty-nine".