97783043571840 has 1536 divisors, whose sum is σ = 377182317899520. Its totient is φ = 21439158681600.

The previous prime is 97783043571791. The next prime is 97783043571841. The reversal of 97783043571840 is 4817534038779.

It is a super-2 number, since 2×97783043571840² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (66).

It is not an unprimeable number, because it can be changed into a prime (97783043571841) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 10849107174 + ... + 10849116186.

Almost surely, 2^{97783043571840} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 97783043571840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (188591158949760).

97783043571840 is an abundant number, since it is smaller than the sum of its proper divisors (279399274327680).

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

97783043571840 is a wasteful number, since it uses less digits than its factorization.

97783043571840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9182 (or 9159 counting only the distinct ones).

The product of its (nonzero) digits is 142248960, while the sum is 66.

The spelling of 97783043571840 in words is "ninety-seven trillion, seven hundred eighty-three billion, forty-three million, five hundred seventy-one thousand, eight hundred forty".