51132236156140 has 96 divisors (see below), whose sum is σ = 115511669663040. Its totient is φ = 18943225307136.

The previous prime is 51132236156107. The next prime is 51132236156233. The reversal of 51132236156140 is 4165163223115.

It is a super-2 number, since 2×51132236156140² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 51132236156093 and 51132236156102.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8670066 + ... + 13320454.

It is an arithmetic number, because the mean of its divisors is an integer number (1203246558990).

Almost surely, 2^{51132236156140} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51132236156140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57755834831520).

51132236156140 is an abundant number, since it is smaller than the sum of its proper divisors (64379433506900).

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

51132236156140 is a wasteful number, since it uses less digits than its factorization.

51132236156140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4650931 (or 4650929 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 40.

Adding to 51132236156140 its reverse (4165163223115), we get a palindrome (55297399379255).

The spelling of 51132236156140 in words is "fifty-one trillion, one hundred thirty-two billion, two hundred thirty-six million, one hundred fifty-six thousand, one hundred forty".