51742705641 has 16 divisors (see below), whose sum is σ = 77857364160. Its totient is φ = 30277862720.

The previous prime is 51742705631. The next prime is 51742705787. The reversal of 51742705641 is 14650724715.

It is a cyclic number.

It is not a de Polignac number, because 51742705641 - 2⁶ = 51742705577 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 51742705593 and 51742705602.

It is not an unprimeable number, because it can be changed into a prime (51742705631) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27032850 + ... + 27034763.

It is an arithmetic number, because the mean of its divisors is an integer number (4866085260).

Almost surely, 2^51742705641 is an apocalyptic number.

It is an amenable number.

51742705641 is a deficient number, since it is larger than the sum of its proper divisors (26114658519).

51742705641 is a wasteful number, since it uses less digits than its factorization.

51742705641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54067656.

The product of its (nonzero) digits is 235200, while the sum is 42.

The spelling of 51742705641 in words is "fifty-one billion, seven hundred forty-two million, seven hundred five thousand, six hundred forty-one".