51307099094 has 4 divisors (see below), whose sum is σ = 76960648644. Its totient is φ = 25653549546.

The previous prime is 51307099049. The next prime is 51307099111. The reversal of 51307099094 is 49099070315.

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

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 12826774772 + ... + 12826774775.

It is an arithmetic number, because the mean of its divisors is an integer number (19240162161).

Almost surely, 2^51307099094 is an apocalyptic number.

51307099094 is a deficient number, since it is larger than the sum of its proper divisors (25653549550).

51307099094 is a wasteful number, since it uses less digits than its factorization.

51307099094 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25653549549.

The product of its (nonzero) digits is 306180, while the sum is 47.

The spelling of 51307099094 in words is "fifty-one billion, three hundred seven million, ninety-nine thousand, ninety-four".