20012530345 has 32 divisors (see below), whose sum is σ = 25975977984. Its totient is φ = 14757811200.

The previous prime is 20012530327. The next prime is 20012530357. The reversal of 20012530345 is 54303521002.

It is not a de Polignac number, because 20012530345 - 2⁹ = 20012529833 is a prime.

It is a Duffinian number.

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, 847519 + ... + 870811.

It is an arithmetic number, because the mean of its divisors is an integer number (811749312).

Almost surely, 2^20012530345 is an apocalyptic number.

It is an amenable number.

20012530345 is a deficient number, since it is larger than the sum of its proper divisors (5963447639).

20012530345 is a wasteful number, since it uses less digits than its factorization.

20012530345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23593.

The product of its (nonzero) digits is 3600, while the sum is 25.

The spelling of 20012530345 in words is "twenty billion, twelve million, five hundred thirty thousand, three hundred forty-five".