51436541857342 has 4 divisors (see below), whose sum is σ = 77154812786016. Its totient is φ = 25718270928670.

The previous prime is 51436541857339. The next prime is 51436541857391. The reversal of 51436541857342 is 24375814563415.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12859135464334 + ... + 12859135464337.

It is an arithmetic number, because the mean of its divisors is an integer number (19288703196504).

Almost surely, 2^{51436541857342} is an apocalyptic number.

51436541857342 is a deficient number, since it is larger than the sum of its proper divisors (25718270928674).

51436541857342 is a wasteful number, since it uses less digits than its factorization.

51436541857342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25718270928673.

The product of its digits is 48384000, while the sum is 58.

The spelling of 51436541857342 in words is "fifty-one trillion, four hundred thirty-six billion, five hundred forty-one million, eight hundred fifty-seven thousand, three hundred forty-two".