51190223845 has 12 divisors (see below), whose sum is σ = 62963072100. Its totient is φ = 39953338880.

The previous prime is 51190223837. The next prime is 51190223869. The reversal of 51190223845 is 54832209115.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 12984830401 + 38205393444 = 113951^2 + 195462^2 .

It is not a de Polignac number, because 51190223845 - 2³ = 51190223837 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51190223798 and 51190223807.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3036820 + ... + 3053629.

It is an arithmetic number, because the mean of its divisors is an integer number (5246922675).

Almost surely, 2^51190223845 is an apocalyptic number.

It is an amenable number.

51190223845 is a deficient number, since it is larger than the sum of its proper divisors (11772848255).

51190223845 is an equidigital number, since it uses as much as digits as its factorization.

51190223845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6090536 (or 6090495 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 40.

The spelling of 51190223845 in words is "fifty-one billion, one hundred ninety million, two hundred twenty-three thousand, eight hundred forty-five".