64621600608001 has 4 divisors (see below), whose sum is σ = 64622254050900. Its totient is φ = 64620947165104.

The previous prime is 64621600607999. The next prime is 64621600608011. The reversal of 64621600608001 is 10080600612646.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 22061621120400 + 42559979487601 = 4696980^2 + 6523801^2 .

It is a cyclic number.

It is not a de Polignac number, because 64621600608001 - 2¹ = 64621600607999 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64621600608011) 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, 326573086 + ... + 326770903.

It is an arithmetic number, because the mean of its divisors is an integer number (16155563512725).

Almost surely, 2^{64621600608001} is an apocalyptic number.

It is an amenable number.

64621600608001 is a deficient number, since it is larger than the sum of its proper divisors (653442899).

64621600608001 is an equidigital number, since it uses as much as digits as its factorization.

64621600608001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 653442898.

The product of its (nonzero) digits is 82944, while the sum is 40.

The spelling of 64621600608001 in words is "sixty-four trillion, six hundred twenty-one billion, six hundred million, six hundred eight thousand, one".