20310120644002 has 16 divisors (see below), whose sum is σ = 34952825750400. Its totient is φ = 8670468400128.

The previous prime is 20310120643999. The next prime is 20310120644017. The reversal of 20310120644002 is 20044602101302.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2822414502 + ... + 2822421697.

It is an arithmetic number, because the mean of its divisors is an integer number (2184551609400).

Almost surely, 2^{20310120644002} is an apocalyptic number.

20310120644002 is a deficient number, since it is larger than the sum of its proper divisors (14642705106398).

20310120644002 is a wasteful number, since it uses less digits than its factorization.

20310120644002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5644836465.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 20310120644002 its reverse (20044602101302), we get a palindrome (40354722745304).

The spelling of 20310120644002 in words is "twenty trillion, three hundred ten billion, one hundred twenty million, six hundred forty-four thousand, two".