51417723761 has 8 divisors (see below), whose sum is σ = 53665679040. Its totient is φ = 49170802032.

The previous prime is 51417723697. The next prime is 51417723793. The reversal of 51417723761 is 16732771415.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 51417723761 - 2⁶ = 51417723697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51417722761) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 155846 + ... + 356543.

It is an arithmetic number, because the mean of its divisors is an integer number (6708209880).

Almost surely, 2^51417723761 is an apocalyptic number.

It is an amenable number.

51417723761 is a deficient number, since it is larger than the sum of its proper divisors (2247955279).

51417723761 is a wasteful number, since it uses less digits than its factorization.

51417723761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 516775.

The product of its digits is 246960, while the sum is 44.

The spelling of 51417723761 in words is "fifty-one billion, four hundred seventeen million, seven hundred twenty-three thousand, seven hundred sixty-one".