56201645378 has 6 divisors (see below), whose sum is σ = 84302970969. Its totient is φ = 28100655056.

The previous prime is 56201645351. The next prime is 56201645419. The reversal of 56201645378 is 87354610265.

It can be written as a sum of positive squares in 2 ways, for example, as 29071273009 + 27130372369 = 170503^2 + 164713^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=167633.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 251450 + ... + 419082.

Almost surely, 2^56201645378 is an apocalyptic number.

56201645378 is a deficient number, since it is larger than the sum of its proper divisors (28101325591).

56201645378 is an frugal number, since it uses more digits than its factorization.

56201645378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 335268 (or 167635 counting only the distinct ones).

The product of its (nonzero) digits is 1209600, while the sum is 47.

The spelling of 56201645378 in words is "fifty-six billion, two hundred one million, six hundred forty-five thousand, three hundred seventy-eight".