51156102361 has 24 divisors (see below), whose sum is σ = 64267494984. Its totient is φ = 40360320000.

The previous prime is 51156102353. The next prime is 51156102367. The reversal of 51156102361 is 16320165115.

It is a happy number.

51156102361 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 995781136 + 50160321225 = 31556^2 + 223965^2 .

It is not a de Polignac number, because 51156102361 - 2³ = 51156102353 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51156102367) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 111111 + ... + 338611.

It is an arithmetic number, because the mean of its divisors is an integer number (2677812291).

Almost surely, 2^51156102361 is an apocalyptic number.

It is an amenable number.

51156102361 is a deficient number, since it is larger than the sum of its proper divisors (13111392623).

51156102361 is a wasteful number, since it uses less digits than its factorization.

51156102361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227881 (or 227874 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 31.

Adding to 51156102361 its reverse (16320165115), we get a palindrome (67476267476).

The spelling of 51156102361 in words is "fifty-one billion, one hundred fifty-six million, one hundred two thousand, three hundred sixty-one".