19739825249573 has 16 divisors (see below), whose sum is σ = 23817623214336. Its totient is φ = 16117188632640.

The previous prime is 19739825249563. The next prime is 19739825249587. The reversal of 19739825249573 is 37594252893791.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19739825249573 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 19739825249573.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19739825249563) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1865410061 + ... + 1865420642.

It is an arithmetic number, because the mean of its divisors is an integer number (1488601450896).

Almost surely, 2^{19739825249573} is an apocalyptic number.

19739825249573 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

19739825249573 is a deficient number, since it is larger than the sum of its proper divisors (4077797964763).

19739825249573 is a wasteful number, since it uses less digits than its factorization.

19739825249573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3730830764.

The product of its digits is 1028764800, while the sum is 74.

The spelling of 19739825249573 in words is "nineteen trillion, seven hundred thirty-nine billion, eight hundred twenty-five million, two hundred forty-nine thousand, five hundred seventy-three".