51441511440 has 160 divisors (see below), whose sum is σ = 178667957376. Its totient is φ = 12133601280.

The previous prime is 51441511391. The next prime is 51441511463. The reversal of 51441511440 is 4411514415.

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

It is a junction number, because it is equal to n+sod(n) for n = 51441511398 and 51441511407.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 165637 + ... + 360996.

Almost surely, 2^51441511440 is an apocalyptic number.

It is an amenable number.

51441511440 is an abundant number, since it is smaller than the sum of its proper divisors (127226445936).

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

51441511440 is a wasteful number, since it uses less digits than its factorization.

51441511440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 526697 (or 526691 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 30.

The spelling of 51441511440 in words is "fifty-one billion, four hundred forty-one million, five hundred eleven thousand, four hundred forty".