51472867873 has 4 divisors (see below), whose sum is σ = 58826134720. Its totient is φ = 44119601028.

The previous prime is 51472867807. The next prime is 51472867879. The reversal of 51472867873 is 37876827415.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 51472867873 - 2²¹ = 51470770721 is a prime.

It is a super-2 number, since 2×51472867873² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51472867879) 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, 3676633413 + ... + 3676633426.

It is an arithmetic number, because the mean of its divisors is an integer number (14706533680).

Almost surely, 2^51472867873 is an apocalyptic number.

It is an amenable number.

51472867873 is a deficient number, since it is larger than the sum of its proper divisors (7353266847).

51472867873 is an equidigital number, since it uses as much as digits as its factorization.

51472867873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7353266846.

The product of its digits is 15805440, while the sum is 58.

The spelling of 51472867873 in words is "fifty-one billion, four hundred seventy-two million, eight hundred sixty-seven thousand, eight hundred seventy-three".