66056535430904 has 16 divisors (see below), whose sum is σ = 124952074765920. Its totient is φ = 32735982160000.

The previous prime is 66056535430867. The next prime is 66056535430931. The reversal of 66056535430904 is 40903453565066.

It is a self number, because there is not a number n which added to its sum of digits gives 66056535430904.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36535693472 + ... + 36535695279.

It is an arithmetic number, because the mean of its divisors is an integer number (7809504672870).

Almost surely, 2^{66056535430904} is an apocalyptic number.

It is an amenable number.

66056535430904 is a deficient number, since it is larger than the sum of its proper divisors (58895539335016).

66056535430904 is a wasteful number, since it uses less digits than its factorization.

66056535430904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73071388870 (or 73071388866 counting only the distinct ones).

The product of its (nonzero) digits is 34992000, while the sum is 56.

The spelling of 66056535430904 in words is "sixty-six trillion, fifty-six billion, five hundred thirty-five million, four hundred thirty thousand, nine hundred four".