51901080000 has 1120 divisors, whose sum is σ = 220756935168. Its totient is φ = 10444800000.

The previous prime is 51901079981. The next prime is 51901080001. The reversal of 51901080000 is 8010915.

It is a tau number, because it is divible by the number of its divisors (1120).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51901080001) by changing a digit.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 378839932 + ... + 378840068.

Almost surely, 2^51901080000 is an apocalyptic number.

51901080000 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 51901080000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (110378467584).

51901080000 is an abundant number, since it is smaller than the sum of its proper divisors (168855855168).

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

51901080000 is a wasteful number, since it uses less digits than its factorization.

51901080000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231 (or 206 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 24.

Adding to 51901080000 its reverse (8010915), we get a palindrome (51909090915).

The spelling of 51901080000 in words is "fifty-one billion, nine hundred one million, eighty thousand".