51662327620144 has 40 divisors (see below), whose sum is σ = 103376867742720. Its totient is φ = 24985268404800.

The previous prime is 51662327620133. The next prime is 51662327620259. The reversal of 51662327620144 is 44102672326615.

It is a super-2 number, since 2×51662327620144² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25334212 + ... + 27297379.

It is an arithmetic number, because the mean of its divisors is an integer number (2584421693568).

Almost surely, 2^{51662327620144} is an apocalyptic number.

It is an amenable number.

51662327620144 is an abundant number, since it is smaller than the sum of its proper divisors (51714540122576).

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

51662327620144 is a wasteful number, since it uses less digits than its factorization.

51662327620144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52633609 (or 52633603 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 49.

Adding to 51662327620144 its reverse (44102672326615), we get a palindrome (95764999946759).

The spelling of 51662327620144 in words is "fifty-one trillion, six hundred sixty-two billion, three hundred twenty-seven million, six hundred twenty thousand, one hundred forty-four".