19497245884545 has 64 divisors (see below), whose sum is σ = 37913139936000. Its totient is φ = 8425142154240.

The previous prime is 19497245884541. The next prime is 19497245884553. The reversal of 19497245884545 is 54548854279491.

It is not a de Polignac number, because 19497245884545 - 2² = 19497245884541 is a prime.

It is not an unprimeable number, because it can be changed into a prime (19497245884541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 156655470 + ... + 156779879.

It is an arithmetic number, because the mean of its divisors is an integer number (592392811500).

Almost surely, 2^{19497245884545} is an apocalyptic number.

19497245884545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

19497245884545 is a deficient number, since it is larger than the sum of its proper divisors (18415894051455).

19497245884545 is a wasteful number, since it uses less digits than its factorization.

19497245884545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 313435410.

The product of its digits is 2322432000, while the sum is 75.

The spelling of 19497245884545 in words is "nineteen trillion, four hundred ninety-seven billion, two hundred forty-five million, eight hundred eighty-four thousand, five hundred forty-five".