56621445206 has 4 divisors (see below), whose sum is σ = 84932167812. Its totient is φ = 28310722602.

The previous prime is 56621445203. The next prime is 56621445229. The reversal of 56621445206 is 60254412665.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56621445203) by changing a digit.

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 as a sum of consecutive naturals, namely, 14155361300 + ... + 14155361303.

It is an arithmetic number, because the mean of its divisors is an integer number (21233041953).

Almost surely, 2^56621445206 is an apocalyptic number.

56621445206 is a deficient number, since it is larger than the sum of its proper divisors (28310722606).

56621445206 is a wasteful number, since it uses less digits than its factorization.

56621445206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28310722605.

The product of its (nonzero) digits is 345600, while the sum is 41.

The spelling of 56621445206 in words is "fifty-six billion, six hundred twenty-one million, four hundred forty-five thousand, two hundred six".