51144021410520 has 64 divisors (see below), whose sum is σ = 154029076247520. Its totient is φ = 13585337974784.

The previous prime is 51144021410519. The next prime is 51144021410563. The reversal of 51144021410520 is 2501412044115.

It is a super-3 number, since 3×51144021410520³ (a number of 42 digits) contains 333 as substring.

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 polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 829152387 + ... + 829214066.

Almost surely, 2^{51144021410520} is an apocalyptic number.

It is an amenable number.

51144021410520 is an abundant number, since it is smaller than the sum of its proper divisors (102885054837000).

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

51144021410520 is a wasteful number, since it uses less digits than its factorization.

51144021410520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1658366724 (or 1658366720 counting only the distinct ones).

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

Adding to 51144021410520 its reverse (2501412044115), we get a palindrome (53645433454635).

The spelling of 51144021410520 in words is "fifty-one trillion, one hundred forty-four billion, twenty-one million, four hundred ten thousand, five hundred twenty".