51930273024 has 432 divisors, whose sum is σ = 177040095232. Its totient is φ = 14331727872.

The previous prime is 51930273023. The next prime is 51930273047. The reversal of 51930273024 is 42037203915.

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

It is a self number, because there is not a number n which added to its sum of digits gives 51930273024.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51930273023) 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, 71430549 + ... + 71431275.

Almost surely, 2^51930273024 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 51930273024, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88520047616).

51930273024 is an abundant number, since it is smaller than the sum of its proper divisors (125109822208).

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

51930273024 is a wasteful number, since it uses less digits than its factorization.

51930273024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 902 (or 885 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 36.

Adding to 51930273024 its reverse (42037203915), we get a palindrome (93967476939).

The spelling of 51930273024 in words is "fifty-one billion, nine hundred thirty million, two hundred seventy-three thousand, twenty-four".