197197602405 has 24 divisors (see below), whose sum is σ = 335167696992. Its totient is φ = 98985460992.

The previous prime is 197197602403. The next prime is 197197602449. The reversal of 197197602405 is 504206791791.

It is not a de Polignac number, because 197197602405 - 2¹ = 197197602403 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197197602403) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22740487 + ... + 22749156.

It is an arithmetic number, because the mean of its divisors is an integer number (13965320708).

Almost surely, 2^197197602405 is an apocalyptic number.

197197602405 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

197197602405 is a deficient number, since it is larger than the sum of its proper divisors (137970094587).

197197602405 is a wasteful number, since it uses less digits than its factorization.

197197602405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45489685 (or 45489668 counting only the distinct ones).

The product of its (nonzero) digits is 952560, while the sum is 51.

The spelling of 197197602405 in words is "one hundred ninety-seven billion, one hundred ninety-seven million, six hundred two thousand, four hundred five".