51348378180 has 96 divisors (see below), whose sum is σ = 165101045760. Its totient is φ = 11792926080.

The previous prime is 51348378139. The next prime is 51348378181. The reversal of 51348378180 is 8187384315.

It is a happy number.

It is a super-2 number, since 2×51348378180² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51348378181) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2034844 + ... + 2059923.

It is an arithmetic number, because the mean of its divisors is an integer number (1719802560).

Almost surely, 2^51348378180 is an apocalyptic number.

It is an amenable number.

51348378180 is an abundant number, since it is smaller than the sum of its proper divisors (113752667580).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51348378180 is a wasteful number, since it uses less digits than its factorization.

51348378180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4094809 (or 4094807 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 48.

The spelling of 51348378180 in words is "fifty-one billion, three hundred forty-eight million, three hundred seventy-eight thousand, one hundred eighty".