51441520540 has 12 divisors (see below), whose sum is σ = 108027193176. Its totient is φ = 20576608208.

The previous prime is 51441520523. The next prime is 51441520541. The reversal of 51441520540 is 4502514415.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51441520541) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1286037994 + ... + 1286038033.

It is an arithmetic number, because the mean of its divisors is an integer number (9002266098).

Almost surely, 2^51441520540 is an apocalyptic number.

It is an amenable number.

51441520540 is an abundant number, since it is smaller than the sum of its proper divisors (56585672636).

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

51441520540 is a wasteful number, since it uses less digits than its factorization.

51441520540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2572076036 (or 2572076034 counting only the distinct ones).

The product of its (nonzero) digits is 16000, while the sum is 31.

The spelling of 51441520540 in words is "fifty-one billion, four hundred forty-one million, five hundred twenty thousand, five hundred forty".