51482667398399 has 4 divisors (see below), whose sum is σ = 51565838105640. Its totient is φ = 51399496691160.

The previous prime is 51482667398387. The next prime is 51482667398401. The reversal of 51482667398399 is 99389376628415.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51482667398399 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 (51482667398329) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41585352692 + ... + 41585353929.

It is an arithmetic number, because the mean of its divisors is an integer number (12891459526410).

Almost surely, 2^{51482667398399} is an apocalyptic number.

51482667398399 is a deficient number, since it is larger than the sum of its proper divisors (83170707241).

51482667398399 is an equidigital number, since it uses as much as digits as its factorization.

51482667398399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83170707240.

The product of its digits is 4232632320, while the sum is 80.

The spelling of 51482667398399 in words is "fifty-one trillion, four hundred eighty-two billion, six hundred sixty-seven million, three hundred ninety-eight thousand, three hundred ninety-nine".