56026101661 has 4 divisors (see below), whose sum is σ = 56026690524. Its totient is φ = 56025512800.

The previous prime is 56026101641. The next prime is 56026101683. The reversal of 56026101661 is 16610162065.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 18873539161 + 37152562500 = 137381^2 + 192750^2 .

It is a cyclic number.

It is not a de Polignac number, because 56026101661 - 2¹⁷ = 56025970589 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56026101641) 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, 115450 + ... + 354091.

It is an arithmetic number, because the mean of its divisors is an integer number (14006672631).

Almost surely, 2^56026101661 is an apocalyptic number.

It is an amenable number.

56026101661 is a deficient number, since it is larger than the sum of its proper divisors (588863).

56026101661 is a wasteful number, since it uses less digits than its factorization.

56026101661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 588862.

The product of its (nonzero) digits is 12960, while the sum is 34.

The spelling of 56026101661 in words is "fifty-six billion, twenty-six million, one hundred one thousand, six hundred sixty-one".