19497403735848 has 192 divisors, whose sum is σ = 57514100467200. Its totient is φ = 5944300992000.

The previous prime is 19497403735811. The next prime is 19497403735891. The reversal of 19497403735848 is 84853730479491.

19497403735848 is a `hidden beast` number, since 1 + 9 + 4 + 9 + 7 + 4 + 0 + 37 + 3 + 584 + 8 = 666.

19497403735848 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 17307738 + ... + 18399798.

It is an arithmetic number, because the mean of its divisors is an integer number (299552606600).

Almost surely, 2^{19497403735848} is an apocalyptic number.

19497403735848 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19497403735848, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28757050233600).

19497403735848 is an abundant number, since it is smaller than the sum of its proper divisors (38016696731352).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

19497403735848 is a wasteful number, since it uses less digits than its factorization.

19497403735848 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1092544 (or 1092537 counting only the distinct ones).

The product of its (nonzero) digits is 731566080, while the sum is 72.

The spelling of 19497403735848 in words is "nineteen trillion, four hundred ninety-seven billion, four hundred three million, seven hundred thirty-five thousand, eight hundred forty-eight".