66053644051 has 16 divisors (see below), whose sum is σ = 70593177600. Its totient is φ = 61709745888.

The previous prime is 66053644031. The next prime is 66053644067. The reversal of 66053644051 is 15044635066.

It is a cyclic number.

It is not a de Polignac number, because 66053644051 - 2¹³ = 66053635859 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 66053643995 and 66053644013.

It is not an unprimeable number, because it can be changed into a prime (66053644031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 257971 + ... + 445708.

It is an arithmetic number, because the mean of its divisors is an integer number (4412073600).

Almost surely, 2^66053644051 is an apocalyptic number.

66053644051 is a deficient number, since it is larger than the sum of its proper divisors (4539533549).

66053644051 is a wasteful number, since it uses less digits than its factorization.

66053644051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 703818.

The product of its (nonzero) digits is 259200, while the sum is 40.

The spelling of 66053644051 in words is "sixty-six billion, fifty-three million, six hundred forty-four thousand, fifty-one".