51542690314 has 4 divisors (see below), whose sum is σ = 77314035474. Its totient is φ = 25771345156.

The previous prime is 51542690233. The next prime is 51542690333. The reversal of 51542690314 is 41309624515.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 41309624515 = 5 ⋅8261924903.

It can be written as a sum of positive squares in only one way, i.e., 47191045225 + 4351645089 = 217235^2 + 65967^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12885672577 + ... + 12885672580.

Almost surely, 2^51542690314 is an apocalyptic number.

51542690314 is a deficient number, since it is larger than the sum of its proper divisors (25771345160).

51542690314 is a wasteful number, since it uses less digits than its factorization.

51542690314 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25771345159.

The product of its (nonzero) digits is 129600, while the sum is 40.

The spelling of 51542690314 in words is "fifty-one billion, five hundred forty-two million, six hundred ninety thousand, three hundred fourteen".