673762251461 has 4 divisors (see below), whose sum is σ = 725590116972. Its totient is φ = 621934385952.

The previous prime is 673762251439. The next prime is 673762251473. The reversal of 673762251461 is 164152267376.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 133147631236 + 540614620225 = 364894^2 + 735265^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-673762251461 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (673762251401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25913932736 + ... + 25913932761.

It is an arithmetic number, because the mean of its divisors is an integer number (181397529243).

Almost surely, 2^673762251461 is an apocalyptic number.

It is an amenable number.

673762251461 is a deficient number, since it is larger than the sum of its proper divisors (51827865511).

673762251461 is a wasteful number, since it uses less digits than its factorization.

673762251461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51827865510.

The product of its digits is 2540160, while the sum is 50.

The spelling of 673762251461 in words is "six hundred seventy-three billion, seven hundred sixty-two million, two hundred fifty-one thousand, four hundred sixty-one".