5251511320000 has 210 divisors, whose sum is σ = 14313496639904. Its totient is φ = 1909638720000.

The previous prime is 5251511319997. The next prime is 5251511320007. The reversal of 5251511320000 is 231151525.

It is a super-2 number, since 2×5251511320000² (a number of 26 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5251511320007) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 4297489 + ... + 5382511.

Almost surely, 2^{5251511320000} is an apocalyptic number.

5251511320000 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 5251511320000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7156748319952).

5251511320000 is an abundant number, since it is smaller than the sum of its proper divisors (9061985319904).

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

5251511320000 is a wasteful number, since it uses less digits than its factorization.

5251511320000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1085077 (or 1085041 counting only the distinct ones).

The product of its (nonzero) digits is 1500, while the sum is 25.

Adding to 5251511320000 its reverse (231151525), we get a palindrome (5251742471525).

The spelling of 5251511320000 in words is "five trillion, two hundred fifty-one billion, five hundred eleven million, three hundred twenty thousand".