51156111052 has 12 divisors (see below), whose sum is σ = 91942740400. Its totient is φ = 24886756656.

The previous prime is 51156111047. The next prime is 51156111059. The reversal of 51156111052 is 25011165115.

51156111052 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 51156111052.

It is not an unprimeable number, because it can be changed into a prime (51156111059) 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, 172824552 + ... + 172824847.

Almost surely, 2^51156111052 is an apocalyptic number.

It is an amenable number.

51156111052 is a deficient number, since it is larger than the sum of its proper divisors (40786629348).

51156111052 is a wasteful number, since it uses less digits than its factorization.

51156111052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 345649440 (or 345649438 counting only the distinct ones).

The product of its (nonzero) digits is 1500, while the sum is 28.

Adding to 51156111052 its reverse (25011165115), we get a palindrome (76167276167).

The spelling of 51156111052 in words is "fifty-one billion, one hundred fifty-six million, one hundred eleven thousand, fifty-two".