20103412985 has 32 divisors (see below), whose sum is σ = 25944831360. Its totient is φ = 14899995648.

The previous prime is 20103412969. The next prime is 20103412997. The reversal of 20103412985 is 58921430102.

It is a cyclic number.

It is not a de Polignac number, because 20103412985 - 2⁴ = 20103412969 is a prime.

It is a super-2 number, since 2×20103412985² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1991531 + ... + 2001599.

It is an arithmetic number, because the mean of its divisors is an integer number (810775980).

Almost surely, 2^20103412985 is an apocalyptic number.

It is an amenable number.

20103412985 is a deficient number, since it is larger than the sum of its proper divisors (5841418375).

20103412985 is a wasteful number, since it uses less digits than its factorization.

20103412985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10457.

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

The spelling of 20103412985 in words is "twenty billion, one hundred three million, four hundred twelve thousand, nine hundred eighty-five".