5121043865 has 8 divisors (see below), whose sum is σ = 7023145920. Its totient is φ = 3511572912.

The previous prime is 5121043843. The next prime is 5121043877. The reversal of 5121043865 is 5683401215.

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 5121043865 - 2⁶ = 5121043801 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35), and also a Moran number because the ratio is a prime number: 146315539 = 5121043865 / (5 + 1 + 2 + 1 + 0 + 4 + 3 + 8 + 6 + 5).

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, 73157735 + ... + 73157804.

It is an arithmetic number, because the mean of its divisors is an integer number (877893240).

Almost surely, 2^5121043865 is an apocalyptic number.

It is an amenable number.

5121043865 is a deficient number, since it is larger than the sum of its proper divisors (1902102055).

5121043865 is a wasteful number, since it uses less digits than its factorization.

5121043865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146315551.

The product of its (nonzero) digits is 28800, while the sum is 35.

The square root of 5121043865 is about 71561.4691366800. The cubic root of 5121043865 is about 1723.6648763040.

The spelling of 5121043865 in words is "five billion, one hundred twenty-one million, forty-three thousand, eight hundred sixty-five".