56671722145 has 8 divisors (see below), whose sum is σ = 68607890856. Its totient is φ = 44936161536.

The previous prime is 56671722103. The next prime is 56671722187. The reversal of 56671722145 is 54122717665.

It is an interprime number because it is at equal distance from previous prime (56671722103) and next prime (56671722187).

It can be written as a sum of positive squares in 4 ways, for example, as 4342414609 + 52329307536 = 65897^2 + 228756^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 56671722145 - 2¹⁵ = 56671689377 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 56671722095 and 56671722104.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 50151402 + ... + 50152531.

It is an arithmetic number, because the mean of its divisors is an integer number (8575986357).

Almost surely, 2^56671722145 is an apocalyptic number.

It is an amenable number.

56671722145 is a deficient number, since it is larger than the sum of its proper divisors (11936168711).

56671722145 is a wasteful number, since it uses less digits than its factorization.

56671722145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100304051.

The product of its digits is 705600, while the sum is 46.

The spelling of 56671722145 in words is "fifty-six billion, six hundred seventy-one million, seven hundred twenty-two thousand, one hundred forty-five".