51324366613 has 24 divisors (see below), whose sum is σ = 59674314816. Its totient is φ = 43961299200.

The previous prime is 51324366571. The next prime is 51324366619. The reversal of 51324366613 is 31666342315.

It is not a de Polignac number, because 51324366613 - 2⁹ = 51324366101 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51324366619) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 78178 + ... + 329788.

It is an arithmetic number, because the mean of its divisors is an integer number (2486429784).

Almost surely, 2^51324366613 is an apocalyptic number.

It is an amenable number.

51324366613 is a deficient number, since it is larger than the sum of its proper divisors (8349948203).

51324366613 is a wasteful number, since it uses less digits than its factorization.

51324366613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251725 (or 251712 counting only the distinct ones).

The product of its digits is 233280, while the sum is 40.

The spelling of 51324366613 in words is "fifty-one billion, three hundred twenty-four million, three hundred sixty-six thousand, six hundred thirteen".