51626264800 has 288 divisors, whose sum is σ = 139943855520. Its totient is φ = 18441830400.

The previous prime is 51626264797. The next prime is 51626264869. The reversal of 51626264800 is 846262615.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 191919066 + ... + 191919334.

It is an arithmetic number, because the mean of its divisors is an integer number (485916165).

Almost surely, 2^51626264800 is an apocalyptic number.

51626264800 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 51626264800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69971927760).

51626264800 is an abundant number, since it is smaller than the sum of its proper divisors (88317590720).

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

51626264800 is a wasteful number, since it uses less digits than its factorization.

51626264800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 606 (or 593 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 40.

The spelling of 51626264800 in words is "fifty-one billion, six hundred twenty-six million, two hundred sixty-four thousand, eight hundred".