51437340144 has 40 divisors (see below), whose sum is σ = 147644218320. Its totient is φ = 17145779904.

The previous prime is 51437340091. The next prime is 51437340161. The reversal of 51437340144 is 44104373415.

51437340144 is a `hidden beast` number, since 5 + 143 + 73 + 401 + 44 = 666.

It is a super-2 number, since 2×51437340144² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 51437340099 and 51437340108.

It is a congruent number.

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, 59533527 + ... + 59534390.

It is an arithmetic number, because the mean of its divisors is an integer number (3691105458).

Almost surely, 2^51437340144 is an apocalyptic number.

51437340144 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

It is an amenable number.

51437340144 is an abundant number, since it is smaller than the sum of its proper divisors (96206878176).

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

51437340144 is a wasteful number, since it uses less digits than its factorization.

51437340144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119067934 (or 119067922 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 36.

The spelling of 51437340144 in words is "fifty-one billion, four hundred thirty-seven million, three hundred forty thousand, one hundred forty-four".