74975617197 has 16 divisors (see below), whose sum is σ = 119619218880. Its totient is φ = 46138841136.

The previous prime is 74975617193. The next prime is 74975617217. The reversal of 74975617197 is 79171657947.

74975617197 is a `hidden beast` number, since 7 + 4 + 9 + 7 + 5 + 617 + 1 + 9 + 7 = 666.

It is not a de Polignac number, because 74975617197 - 2² = 74975617193 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74975617193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 106802523 + ... + 106803224.

It is an arithmetic number, because the mean of its divisors is an integer number (7476201180).

Almost surely, 2^74975617197 is an apocalyptic number.

It is an amenable number.

74975617197 is a deficient number, since it is larger than the sum of its proper divisors (44643601683).

74975617197 is a wasteful number, since it uses less digits than its factorization.

74975617197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213605769 (or 213605763 counting only the distinct ones).

The product of its digits is 23337720, while the sum is 63.

The spelling of 74975617197 in words is "seventy-four billion, nine hundred seventy-five million, six hundred seventeen thousand, one hundred ninety-seven".