20310121056644 has 24 divisors (see below), whose sum is σ = 37633807088640. Its totient is φ = 9557615776896.

The previous prime is 20310121056613. The next prime is 20310121056653. The reversal of 20310121056644 is 44665012101302.

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, 6356597 + ... + 9001475.

It is an arithmetic number, because the mean of its divisors is an integer number (1568075295360).

Almost surely, 2^{20310121056644} is an apocalyptic number.

It is an amenable number.

20310121056644 is a deficient number, since it is larger than the sum of its proper divisors (17323686031996).

20310121056644 is a wasteful number, since it uses less digits than its factorization.

20310121056644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2757827 (or 2757825 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 35.

Adding to 20310121056644 its reverse (44665012101302), we get a palindrome (64975133157946).

The spelling of 20310121056644 in words is "twenty trillion, three hundred ten billion, one hundred twenty-one million, fifty-six thousand, six hundred forty-four".