51153133500 has 384 divisors, whose sum is σ = 193030656000. Its totient is φ = 11691086400.

The previous prime is 51153133487. The next prime is 51153133543. The reversal of 51153133500 is 533135115.

51153133500 is a `hidden beast` number, since 5 + 1 + 153 + 1 + 3 + 3 + 500 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 4624977 + ... + 4636023.

It is an arithmetic number, because the mean of its divisors is an integer number (502684000).

Almost surely, 2^51153133500 is an apocalyptic number.

51153133500 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 51153133500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (96515328000).

51153133500 is an abundant number, since it is smaller than the sum of its proper divisors (141877522500).

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

51153133500 is a wasteful number, since it uses less digits than its factorization.

51153133500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11096 (or 11064 counting only the distinct ones).

The product of its (nonzero) digits is 3375, while the sum is 27.

Adding to 51153133500 its reverse (533135115), we get a palindrome (51686268615).

The spelling of 51153133500 in words is "fifty-one billion, one hundred fifty-three million, one hundred thirty-three thousand, five hundred".