51413795646494 has 32 divisors (see below), whose sum is σ = 81696067706880. Its totient is φ = 24183215258112.

The previous prime is 51413795646383. The next prime is 51413795646523. The reversal of 51413795646494 is 49464659731415.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 649674152 + ... + 649753284.

It is an arithmetic number, because the mean of its divisors is an integer number (2553002115840).

Almost surely, 2^{51413795646494} is an apocalyptic number.

51413795646494 is a deficient number, since it is larger than the sum of its proper divisors (30282272060386).

51413795646494 is a wasteful number, since it uses less digits than its factorization.

51413795646494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88004.

The product of its digits is 391910400, while the sum is 68.

The spelling of 51413795646494 in words is "fifty-one trillion, four hundred thirteen billion, seven hundred ninety-five million, six hundred forty-six thousand, four hundred ninety-four".