57409926679729 has 4 divisors (see below), whose sum is σ = 61826074885876. Its totient is φ = 52993778473584.

The previous prime is 57409926679711. The next prime is 57409926679753. The reversal of 57409926679729 is 92797662990475.

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 32437319172129 + 24972607507600 = 5695377^2 + 4997260^2 .

It is not a de Polignac number, because 57409926679729 - 2⁵ = 57409926679697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57409926679529) 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, 2208074103054 + ... + 2208074103079.

It is an arithmetic number, because the mean of its divisors is an integer number (15456518721469).

Almost surely, 2^{57409926679729} is an apocalyptic number.

It is an amenable number.

57409926679729 is a deficient number, since it is larger than the sum of its proper divisors (4416148206147).

57409926679729 is a wasteful number, since it uses less digits than its factorization.

57409926679729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4416148206146.

The product of its (nonzero) digits is 6481218240, while the sum is 82.

The spelling of 57409926679729 in words is "fifty-seven trillion, four hundred nine billion, nine hundred twenty-six million, six hundred seventy-nine thousand, seven hundred twenty-nine".