193897143312980 has 48 divisors (see below), whose sum is σ = 409686925771200. Its totient is φ = 77082121041408.

The previous prime is 193897143312937. The next prime is 193897143312991. The reversal of 193897143312980 is 89213341798391.

It is a super-2 number, since 2×193897143312980² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 193897143312980.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 318448871 + ... + 319057169.

It is an arithmetic number, because the mean of its divisors is an integer number (8535144286900).

Almost surely, 2^{193897143312980} is an apocalyptic number.

193897143312980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

193897143312980 is an abundant number, since it is smaller than the sum of its proper divisors (215789782458220).

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

193897143312980 is a wasteful number, since it uses less digits than its factorization.

193897143312980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 706248 (or 706246 counting only the distinct ones).

The product of its (nonzero) digits is 70543872, while the sum is 68.

The spelling of 193897143312980 in words is "one hundred ninety-three trillion, eight hundred ninety-seven billion, one hundred forty-three million, three hundred twelve thousand, nine hundred eighty".