51194880000 has 840 divisors, whose sum is σ = 203595997176. Its totient is φ = 12288000000.

The previous prime is 51194879999. The next prime is 51194880001. The reversal of 51194880000 is 8849115.

It is an interprime number because it is at equal distance from previous prime (51194879999) and next prime (51194880001).

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 (51194880001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 506879950 + ... + 506880050.

Almost surely, 2^51194880000 is an apocalyptic number.

51194880000 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 51194880000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (101797998588).

51194880000 is an abundant number, since it is smaller than the sum of its proper divisors (152401117176).

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

51194880000 is a wasteful number, since it uses less digits than its factorization.

51194880000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164 (or 122 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 36.

The spelling of 51194880000 in words is "fifty-one billion, one hundred ninety-four million, eight hundred eighty thousand".