197180509420 has 12 divisors (see below), whose sum is σ = 414079069824. Its totient is φ = 78872203760.

The previous prime is 197180509373. The next prime is 197180509453. The reversal of 197180509420 is 24905081791.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4929512716 + ... + 4929512755.

It is an arithmetic number, because the mean of its divisors is an integer number (34506589152).

Almost surely, 2^197180509420 is an apocalyptic number.

197180509420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

197180509420 is an abundant number, since it is smaller than the sum of its proper divisors (216898560404).

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

197180509420 is a wasteful number, since it uses less digits than its factorization.

197180509420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9859025480 (or 9859025478 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 46.

The spelling of 197180509420 in words is "one hundred ninety-seven billion, one hundred eighty million, five hundred nine thousand, four hundred twenty".