51469146865 has 8 divisors (see below), whose sum is σ = 62362617408. Its totient is φ = 40775556720.

The previous prime is 51469146779. The next prime is 51469146893. The reversal of 51469146865 is 56864196415.

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

It is not a de Polignac number, because 51469146865 - 2⁷ = 51469146737 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49969531 + ... + 49970560.

It is an arithmetic number, because the mean of its divisors is an integer number (7795327176).

Almost surely, 2^51469146865 is an apocalyptic number.

It is an amenable number.

51469146865 is a deficient number, since it is larger than the sum of its proper divisors (10893470543).

51469146865 is a wasteful number, since it uses less digits than its factorization.

51469146865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99940199.

The product of its digits is 6220800, while the sum is 55.

The spelling of 51469146865 in words is "fifty-one billion, four hundred sixty-nine million, one hundred forty-six thousand, eight hundred sixty-five".