97878343680 has 1088 divisors, whose sum is σ = 401643486720. Its totient is φ = 22422749184.

The previous prime is 97878343621. The next prime is 97878343681. The reversal of 97878343680 is 8634387879.

It is not an unprimeable number, because it can be changed into a prime (97878343681) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2645360622 + ... + 2645360658.

Almost surely, 2^97878343680 is an apocalyptic number.

97878343680 is a gapful number since it is divisible by the number (90) 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 97878343680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (200821743360).

97878343680 is an abundant number, since it is smaller than the sum of its proper divisors (303765143040).

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

97878343680 is a wasteful number, since it uses less digits than its factorization.

97878343680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119 (or 83 counting only the distinct ones).

The product of its (nonzero) digits is 48771072, while the sum is 63.

The spelling of 97878343680 in words is "ninety-seven billion, eight hundred seventy-eight million, three hundred forty-three thousand, six hundred eighty".