51306523147 has 8 divisors (see below), whose sum is σ = 55992171312. Its totient is φ = 46624444800.

The previous prime is 51306523139. The next prime is 51306523181. The reversal of 51306523147 is 74132560315.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 51306523147 - 2³ = 51306523139 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51306523747) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 862354 + ... + 919927.

It is an arithmetic number, because the mean of its divisors is an integer number (6999021414).

Almost surely, 2^51306523147 is an apocalyptic number.

51306523147 is a deficient number, since it is larger than the sum of its proper divisors (4685648165).

51306523147 is a wasteful number, since it uses less digits than its factorization.

51306523147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1784909.

The product of its (nonzero) digits is 75600, while the sum is 37.

The spelling of 51306523147 in words is "fifty-one billion, three hundred six million, five hundred twenty-three thousand, one hundred forty-seven".