51530803099 has 4 divisors (see below), whose sum is σ = 51533464264. Its totient is φ = 51528141936.

The previous prime is 51530803091. The next prime is 51530803109. The reversal of 51530803099 is 99030803515.

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 51530803099 - 2³ = 51530803091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51530803091) 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, 1301322 + ... + 1340335.

It is an arithmetic number, because the mean of its divisors is an integer number (12883366066).

Almost surely, 2^51530803099 is an apocalyptic number.

51530803099 is a deficient number, since it is larger than the sum of its proper divisors (2661165).

51530803099 is a wasteful number, since it uses less digits than its factorization.

51530803099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2661164.

The product of its (nonzero) digits is 145800, while the sum is 43.

The spelling of 51530803099 in words is "fifty-one billion, five hundred thirty million, eight hundred three thousand, ninety-nine".