197999513940480 has 320 divisors, whose sum is σ = 724131145140480. Its totient is φ = 45211626307584.

The previous prime is 197999513940479. The next prime is 197999513940499. The reversal of 197999513940480 is 84049315999791.

It is a tau number, because it is divible by the number of its divisors (320).

It is a junction number, because it is equal to n+sod(n) for n = 197999513940396 and 197999513940405.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 51751666 + ... + 55445774.

It is an arithmetic number, because the mean of its divisors is an integer number (2262909828564).

Almost surely, 2^{197999513940480} is an apocalyptic number.

197999513940480 is a gapful number since it is divisible by the number (10) 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 197999513940480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (362065572570240).

197999513940480 is an abundant number, since it is smaller than the sum of its proper divisors (526131631200000).

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

197999513940480 is an equidigital number, since it uses as much as digits as its factorization.

197999513940480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3695139 (or 3695123 counting only the distinct ones).

The product of its (nonzero) digits is 793618560, while the sum is 78.

The spelling of 197999513940480 in words is "one hundred ninety-seven trillion, nine hundred ninety-nine billion, five hundred thirteen million, nine hundred forty thousand, four hundred eighty".