51386299684 has 6 divisors (see below), whose sum is σ = 89926024454. Its totient is φ = 25693149840.

The previous prime is 51386299673. The next prime is 51386299697. The reversal of 51386299684 is 48699268315.

It can be written as a sum of positive squares in only one way, i.e., 50445160000 + 941139684 = 224600^2 + 30678^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6423287457 + ... + 6423287464.

Almost surely, 2^51386299684 is an apocalyptic number.

It is an amenable number.

51386299684 is a deficient number, since it is larger than the sum of its proper divisors (38539724770).

51386299684 is a wasteful number, since it uses less digits than its factorization.

51386299684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12846574925 (or 12846574923 counting only the distinct ones).

The product of its digits is 22394880, while the sum is 61.

The spelling of 51386299684 in words is "fifty-one billion, three hundred eighty-six million, two hundred ninety-nine thousand, six hundred eighty-four".