56642645401 has 8 divisors (see below), whose sum is σ = 58722410880. Its totient is φ = 54571318032.

The previous prime is 56642645393. The next prime is 56642645447. The reversal of 56642645401 is 10454624665.

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 56642645401 - 2³ = 56642645393 is a prime.

It is not an unprimeable number, because it can be changed into a prime (56642645461) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2095855 + ... + 2122708.

It is an arithmetic number, because the mean of its divisors is an integer number (7340301360).

Almost surely, 2^56642645401 is an apocalyptic number.

It is an amenable number.

56642645401 is a deficient number, since it is larger than the sum of its proper divisors (2079765479).

56642645401 is a wasteful number, since it uses less digits than its factorization.

56642645401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4219055.

The product of its (nonzero) digits is 691200, while the sum is 43.

It can be divided in two parts, 5664264 and 5401, that added together give a palindrome (5669665).

The spelling of 56642645401 in words is "fifty-six billion, six hundred forty-two million, six hundred forty-five thousand, four hundred one".