51413156643 has 8 divisors (see below), whose sum is σ = 68552874000. Its totient is φ = 34274438528.

The previous prime is 51413156621. The next prime is 51413156689. The reversal of 51413156643 is 34665131415.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51413156643 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51413152643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 120138 + ... + 342431.

It is an arithmetic number, because the mean of its divisors is an integer number (8569109250).

Almost surely, 2^51413156643 is an apocalyptic number.

51413156643 is a deficient number, since it is larger than the sum of its proper divisors (17139717357).

51413156643 is a wasteful number, since it uses less digits than its factorization.

51413156643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 499621.

The product of its digits is 129600, while the sum is 39.

The spelling of 51413156643 in words is "fifty-one billion, four hundred thirteen million, one hundred fifty-six thousand, six hundred forty-three".