51887501831592 has 512 divisors, whose sum is σ = 177862625280000. Its totient is φ = 13980678243840.

The previous prime is 51887501831531. The next prime is 51887501831593. The reversal of 51887501831592 is 29513810578815.

51887501831592 is a `hidden beast` number, since 5 + 1 + 8 + 8 + 7 + 5 + 0 + 1 + 8 + 31 + 592 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (51887501831593) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 120771268 + ... + 121200140.

It is an arithmetic number, because the mean of its divisors is an integer number (347387940000).

Almost surely, 2^{51887501831592} 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 51887501831592, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88931312640000).

51887501831592 is an abundant number, since it is smaller than the sum of its proper divisors (125975123448408).

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

51887501831592 is a wasteful number, since it uses less digits than its factorization.

51887501831592 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 429003 (or 428979 counting only the distinct ones).

The product of its (nonzero) digits is 24192000, while the sum is 63.

The spelling of 51887501831592 in words is "fifty-one trillion, eight hundred eighty-seven billion, five hundred one million, eight hundred thirty-one thousand, five hundred ninety-two".