197838386480 has 80 divisors (see below), whose sum is σ = 528408899904. Its totient is φ = 67478814720.

The previous prime is 197838386477. The next prime is 197838386527. The reversal of 197838386480 is 84683838791.

It is a tau number, because it is divible by the number of its divisors (80).

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, 807161 + ... + 1023320.

Almost surely, 2^197838386480 is an apocalyptic number.

197838386480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

197838386480 is an abundant number, since it is smaller than the sum of its proper divisors (330570513424).

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

197838386480 is a wasteful number, since it uses less digits than its factorization.

197838386480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1830694 (or 1830688 counting only the distinct ones).

The product of its (nonzero) digits is 55738368, while the sum is 65.

The spelling of 197838386480 in words is "one hundred ninety-seven billion, eight hundred thirty-eight million, three hundred eighty-six thousand, four hundred eighty".