51516354078347 has 8 divisors (see below), whose sum is σ = 52506736541280. Its totient is φ = 50530676520960.

The previous prime is 51516354078323. The next prime is 51516354078349. The reversal of 51516354078347 is 74387045361515.

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 51516354078347 - 2²⁸ = 51516085642891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51516354078349) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1176204278 + ... + 1176248075.

It is an arithmetic number, because the mean of its divisors is an integer number (6563342067660).

Almost surely, 2^{51516354078347} is an apocalyptic number.

51516354078347 is a deficient number, since it is larger than the sum of its proper divisors (990382462933).

51516354078347 is a wasteful number, since it uses less digits than its factorization.

51516354078347 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2352452773.

The product of its (nonzero) digits is 42336000, while the sum is 59.

The spelling of 51516354078347 in words is "fifty-one trillion, five hundred sixteen billion, three hundred fifty-four million, seventy-eight thousand, three hundred forty-seven".