51550151520 has 192 divisors, whose sum is σ = 186016352256. Its totient is φ = 11755223040.

The previous prime is 51550151483. The next prime is 51550151531. The reversal of 51550151520 is 2515105515.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1430362 + ... + 1465958.

It is an arithmetic number, because the mean of its divisors is an integer number (968835168).

Almost surely, 2^51550151520 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51550151520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (93008176128).

51550151520 is an abundant number, since it is smaller than the sum of its proper divisors (134466200736).

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

51550151520 is a wasteful number, since it uses less digits than its factorization.

51550151520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36053 (or 36045 counting only the distinct ones).

The product of its (nonzero) digits is 6250, while the sum is 30.

The spelling of 51550151520 in words is "fifty-one billion, five hundred fifty million, one hundred fifty-one thousand, five hundred twenty".