73137456461 has 2 divisors, whose sum is σ = 73137456462. Its totient is φ = 73137456460.

The previous prime is 73137456449. The next prime is 73137456527. The reversal of 73137456461 is 16465473137.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 72673915561 + 463540900 = 269581^2 + 21530^2 .

It is an emirp because it is prime and its reverse (16465473137) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-73137456461 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73127456461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36568728230 + 36568728231.

It is an arithmetic number, because the mean of its divisors is an integer number (36568728231).

Almost surely, 2^73137456461 is an apocalyptic number.

It is an amenable number.

73137456461 is a deficient number, since it is larger than the sum of its proper divisors (1).

73137456461 is an equidigital number, since it uses as much as digits as its factorization.

73137456461 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1270080, while the sum is 47.

The spelling of 73137456461 in words is "seventy-three billion, one hundred thirty-seven million, four hundred fifty-six thousand, four hundred sixty-one".