51436545357 has 8 divisors (see below), whose sum is σ = 68586884320. Its totient is φ = 34288618320.

The previous prime is 51436545341. The next prime is 51436545359. The reversal of 51436545357 is 75354563415.

It is a happy number.

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

It is not a de Polignac number, because 51436545357 - 2⁴ = 51436545341 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 (51436545359) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 552619 + ... + 638952.

It is an arithmetic number, because the mean of its divisors is an integer number (8573360540).

Almost surely, 2^51436545357 is an apocalyptic number.

It is an amenable number.

51436545357 is a deficient number, since it is larger than the sum of its proper divisors (17150338963).

51436545357 is a wasteful number, since it uses less digits than its factorization.

51436545357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1205963.

The product of its digits is 3780000, while the sum is 48.

The spelling of 51436545357 in words is "fifty-one billion, four hundred thirty-six million, five hundred forty-five thousand, three hundred fifty-seven".