51742354093 has 4 divisors (see below), whose sum is σ = 52590589468. Its totient is φ = 50894118720.

The previous prime is 51742354063. The next prime is 51742354151. The reversal of 51742354093 is 39045324715.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 39045324715 = 5 ⋅7809064943.

It can be written as a sum of positive squares in 2 ways, for example, as 9033171849 + 42709182244 = 95043^2 + 206662^2 .

It is a cyclic number.

It is not a de Polignac number, because 51742354093 - 2¹³ = 51742345901 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51742354033) 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, 424117596 + ... + 424117717.

It is an arithmetic number, because the mean of its divisors is an integer number (13147647367).

Almost surely, 2^51742354093 is an apocalyptic number.

It is an amenable number.

51742354093 is a deficient number, since it is larger than the sum of its proper divisors (848235375).

51742354093 is an equidigital number, since it uses as much as digits as its factorization.

51742354093 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 848235374.

The product of its (nonzero) digits is 453600, while the sum is 43.

The spelling of 51742354093 in words is "fifty-one billion, seven hundred forty-two million, three hundred fifty-four thousand, ninety-three".