197947498140 has 144 divisors (see below), whose sum is σ = 716381517600. Its totient is φ = 45245136384.

The previous prime is 197947498139. The next prime is 197947498153. The reversal of 197947498140 is 41894749791.

197947498140 is a `hidden beast` number, since 1 + 9 + 79 + 474 + 98 + 1 + 4 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3714045 + ... + 3766964.

It is an arithmetic number, because the mean of its divisors is an integer number (4974871650).

Almost surely, 2^197947498140 is an apocalyptic number.

197947498140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

197947498140 is an abundant number, since it is smaller than the sum of its proper divisors (518434019460).

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

197947498140 is a wasteful number, since it uses less digits than its factorization.

197947498140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7481041 (or 7481026 counting only the distinct ones).

The product of its (nonzero) digits is 18289152, while the sum is 63.

The spelling of 197947498140 in words is "one hundred ninety-seven billion, nine hundred forty-seven million, four hundred ninety-eight thousand, one hundred forty".