51260896500 has 192 divisors, whose sum is σ = 163695796992. Its totient is φ = 12361728000.

The previous prime is 51260896459. The next prime is 51260896507. The reversal of 51260896500 is 569806215.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51260896507) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3176452 + ... + 3192548.

It is an arithmetic number, because the mean of its divisors is an integer number (852582276).

Almost surely, 2^51260896500 is an apocalyptic number.

51260896500 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51260896500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81847898496).

51260896500 is an abundant number, since it is smaller than the sum of its proper divisors (112434900492).

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

51260896500 is a wasteful number, since it uses less digits than its factorization.

51260896500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16323 (or 16311 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 42.

The spelling of 51260896500 in words is "fifty-one billion, two hundred sixty million, eight hundred ninety-six thousand, five hundred".