56666501106049 has 4 divisors (see below), whose sum is σ = 56666526299140. Its totient is φ = 56666475912960.

The previous prime is 56666501105999. The next prime is 56666501106107. The reversal of 56666501106049 is 94060110566665.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 43399372352400 + 13267128753649 = 6587820^2 + 3642407^2 .

It is a cyclic number.

It is not a de Polignac number, because 56666501106049 - 2¹⁷ = 56666500974977 is a prime.

It is a super-2 number, since 2×56666501106049² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56666501104049) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8851464 + ... + 13844905.

It is an arithmetic number, because the mean of its divisors is an integer number (14166631574785).

Almost surely, 2^{56666501106049} is an apocalyptic number.

It is an amenable number.

56666501106049 is a deficient number, since it is larger than the sum of its proper divisors (25193091).

56666501106049 is a wasteful number, since it uses less digits than its factorization.

56666501106049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25193090.

The product of its (nonzero) digits is 6998400, while the sum is 55.

The spelling of 56666501106049 in words is "fifty-six trillion, six hundred sixty-six billion, five hundred one million, one hundred six thousand, forty-nine".