51465386140063 has 4 divisors (see below), whose sum is σ = 58817584160080. Its totient is φ = 44113188120048.

The previous prime is 51465386140057. The next prime is 51465386140067. The reversal of 51465386140063 is 36004168356415.

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

It is a cyclic number.

It is not a de Polignac number, because 51465386140063 - 2⁹ = 51465386139551 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 (51465386140067) 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, 3676099009998 + ... + 3676099010011.

It is an arithmetic number, because the mean of its divisors is an integer number (14704396040020).

Almost surely, 2^{51465386140063} is an apocalyptic number.

51465386140063 is a deficient number, since it is larger than the sum of its proper divisors (7352198020017).

51465386140063 is an equidigital number, since it uses as much as digits as its factorization.

51465386140063 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7352198020016.

The product of its (nonzero) digits is 6220800, while the sum is 52.

The spelling of 51465386140063 in words is "fifty-one trillion, four hundred sixty-five billion, three hundred eighty-six million, one hundred forty thousand, sixty-three".