56154664205 has 4 divisors (see below), whose sum is σ = 67385597052. Its totient is φ = 44923731360.

The previous prime is 56154664201. The next prime is 56154664219. The reversal of 56154664205 is 50246645165.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50246645165 = 5 ⋅10049329033.

It can be written as a sum of positive squares in 2 ways, for example, as 38748347716 + 17406316489 = 196846^2 + 131933^2 .

It is not a de Polignac number, because 56154664205 - 2² = 56154664201 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 (56154664201) 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, 5615466416 + ... + 5615466425.

It is an arithmetic number, because the mean of its divisors is an integer number (16846399263).

Almost surely, 2^56154664205 is an apocalyptic number.

It is an amenable number.

56154664205 is a deficient number, since it is larger than the sum of its proper divisors (11230932847).

56154664205 is a wasteful number, since it uses less digits than its factorization.

56154664205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11230932846.

The product of its (nonzero) digits is 864000, while the sum is 44.

The spelling of 56154664205 in words is "fifty-six billion, one hundred fifty-four million, six hundred sixty-four thousand, two hundred five".