51450340524 has 96 divisors (see below), whose sum is σ = 136386754560. Its totient is φ = 14954419200.

The previous prime is 51450340453. The next prime is 51450340531. The reversal of 51450340524 is 42504305415.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 406762 + ... + 518030.

It is an arithmetic number, because the mean of its divisors is an integer number (1420695360).

Almost surely, 2^51450340524 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 51450340524, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68193377280).

51450340524 is an abundant number, since it is smaller than the sum of its proper divisors (84936414036).

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

51450340524 is a wasteful number, since it uses less digits than its factorization.

51450340524 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111431 (or 111429 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 33.

Adding to 51450340524 its reverse (42504305415), we get a palindrome (93954645939).

The spelling of 51450340524 in words is "fifty-one billion, four hundred fifty million, three hundred forty thousand, five hundred twenty-four".