51029880000 has 560 divisors, whose sum is σ = 187125400704. Its totient is φ = 12165120000.

The previous prime is 51029879993. The next prime is 51029880001. The reversal of 51029880000 is 8892015.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (51029880001) 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 79 ways as a sum of consecutive naturals, for example, 88439712 + ... + 88440288.

Almost surely, 2^51029880000 is an apocalyptic number.

51029880000 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 51029880000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (93562700352).

51029880000 is an abundant number, since it is smaller than the sum of its proper divisors (136095520704).

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

51029880000 is a wasteful number, since it uses less digits than its factorization.

51029880000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 690 (or 665 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 33.

The spelling of 51029880000 in words is "fifty-one billion, twenty-nine million, eight hundred eighty thousand".