51255231115032 has 192 divisors, whose sum is σ = 160924809576960. Its totient is φ = 14434216473600.

The previous prime is 51255231115031. The next prime is 51255231115087. The reversal of 51255231115032 is 23051113255215.

51255231115032 is a `hidden beast` number, since 5 + 12 + 5 + 5 + 23 + 111 + 503 + 2 = 666.

It is a super-2 number, since 2×51255231115032² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51255231115031) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 134393203 + ... + 134774045.

It is an arithmetic number, because the mean of its divisors is an integer number (838150049880).

Almost surely, 2^{51255231115032} 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 51255231115032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80462404788480).

51255231115032 is an abundant number, since it is smaller than the sum of its proper divisors (109669578461928).

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

51255231115032 is a wasteful number, since it uses less digits than its factorization.

51255231115032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 384694 (or 384687 counting only the distinct ones).

The product of its (nonzero) digits is 45000, while the sum is 36.

The spelling of 51255231115032 in words is "fifty-one trillion, two hundred fifty-five billion, two hundred thirty-one million, one hundred fifteen thousand, thirty-two".