20003401120985 has 16 divisors (see below), whose sum is σ = 25269428217600. Its totient is φ = 15159287926656.

The previous prime is 20003401120877. The next prime is 20003401120987. The reversal of 20003401120985 is 58902110430002.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20003401120985 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20003401120987) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7002449 + ... + 9436158.

It is an arithmetic number, because the mean of its divisors is an integer number (1579339263600).

Almost surely, 2^{20003401120985} is an apocalyptic number.

It is an amenable number.

20003401120985 is a deficient number, since it is larger than the sum of its proper divisors (5266027096615).

20003401120985 is a wasteful number, since it uses less digits than its factorization.

20003401120985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16451440.

The product of its (nonzero) digits is 17280, while the sum is 35.

Adding to 20003401120985 its reverse (58902110430002), we get a palindrome (78905511550987).

The spelling of 20003401120985 in words is "twenty trillion, three billion, four hundred one million, one hundred twenty thousand, nine hundred eighty-five".