8297700398640 has 240 divisors, whose sum is σ = 28396664854272. Its totient is φ = 2170631264256.

The previous prime is 8297700398567. The next prime is 8297700398653. The reversal of 8297700398640 is 468930077928.

It is a tau number, because it is divible by the number of its divisors (240).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 325988154 + ... + 326013606.

Almost surely, 2^{8297700398640} is an apocalyptic number.

8297700398640 is a gapful number since it is divisible by the number (80) 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 8297700398640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14198332427136).

8297700398640 is an abundant number, since it is smaller than the sum of its proper divisors (20098964455632).

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

8297700398640 is a wasteful number, since it uses less digits than its factorization.

8297700398640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34068 (or 34059 counting only the distinct ones).

The product of its (nonzero) digits is 36578304, while the sum is 63.

The spelling of 8297700398640 in words is "eight trillion, two hundred ninety-seven billion, seven hundred million, three hundred ninety-eight thousand, six hundred forty".