51343665723354 has 64 divisors (see below), whose sum is σ = 108161290604160. Its totient is φ = 16203387801600.

The previous prime is 51343665723353. The next prime is 51343665723359. The reversal of 51343665723354 is 45332756634315.

It is a super-2 number, since 2×51343665723354² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 51343665723294 and 51343665723303.

It is not an unprimeable number, because it can be changed into a prime (51343665723353) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1503149644 + ... + 1503183800.

It is an arithmetic number, because the mean of its divisors is an integer number (1690020165690).

Almost surely, 2^{51343665723354} is an apocalyptic number.

51343665723354 is an abundant number, since it is smaller than the sum of its proper divisors (56817624880806).

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

51343665723354 is a wasteful number, since it uses less digits than its factorization.

51343665723354 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42255.

The product of its digits is 81648000, while the sum is 57.

The spelling of 51343665723354 in words is "fifty-one trillion, three hundred forty-three billion, six hundred sixty-five million, seven hundred twenty-three thousand, three hundred fifty-four".