73687736197 has 2 divisors, whose sum is σ = 73687736198. Its totient is φ = 73687736196.

The previous prime is 73687736167. The next prime is 73687736263. The reversal of 73687736197 is 79163778637.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 68141359521 + 5546376676 = 261039^2 + 74474^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-73687736197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73687736167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36843868098 + 36843868099.

It is an arithmetic number, because the mean of its divisors is an integer number (36843868099).

Almost surely, 2^73687736197 is an apocalyptic number.

It is an amenable number.

73687736197 is a deficient number, since it is larger than the sum of its proper divisors (1).

73687736197 is an equidigital number, since it uses as much as digits as its factorization.

73687736197 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 56010528, while the sum is 64.

The spelling of 73687736197 in words is "seventy-three billion, six hundred eighty-seven million, seven hundred thirty-six thousand, one hundred ninety-seven".