51232962240 has 224 divisors, whose sum is σ = 181742608320. Its totient is φ = 13586641920.

The previous prime is 51232962173. The next prime is 51232962241. The reversal of 51232962240 is 4226923215.

51232962240 is a `hidden beast` number, since 5 + 1 + 2 + 3 + 29 + 622 + 4 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 51232962195 and 51232962204.

It is not an unprimeable number, because it can be changed into a prime (51232962241) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 283054950 + ... + 283055130.

It is an arithmetic number, because the mean of its divisors is an integer number (811350930).

Almost surely, 2^51232962240 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 51232962240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90871304160).

51232962240 is an abundant number, since it is smaller than the sum of its proper divisors (130509646080).

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

51232962240 is an frugal number, since it uses more digits than its factorization.

51232962240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 569 (or 191 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The spelling of 51232962240 in words is "fifty-one billion, two hundred thirty-two million, nine hundred sixty-two thousand, two hundred forty".