51324405000 has 320 divisors, whose sum is σ = 178244193600. Its totient is φ = 12205440000.

The previous prime is 51324404893. The next prime is 51324405007. The reversal of 51324405000 is 50442315.

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

It is not an unprimeable number, because it can be changed into a prime (51324405007) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 8742066 + ... + 8747934.

It is an arithmetic number, because the mean of its divisors is an integer number (557013105).

Almost surely, 2^51324405000 is an apocalyptic number.

51324405000 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 51324405000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89122096800).

51324405000 is an abundant number, since it is smaller than the sum of its proper divisors (126919788600).

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

51324405000 is a wasteful number, since it uses less digits than its factorization.

51324405000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5962 (or 5943 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 24.

Adding to 51324405000 its reverse (50442315), we get a palindrome (51374847315).

The spelling of 51324405000 in words is "fifty-one billion, three hundred twenty-four million, four hundred five thousand".