20012053345 has 12 divisors (see below), whose sum is σ = 24871108860. Its totient is φ = 15457582784.

The previous prime is 20012053337. The next prime is 20012053363. The reversal of 20012053345 is 54335021002.

It can be written as a sum of positive squares in 6 ways, for example, as 1345935969 + 18666117376 = 36687^2 + 136624^2 .

It is not a de Polignac number, because 20012053345 - 2³ = 20012053337 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2375350 + ... + 2383759.

It is an arithmetic number, because the mean of its divisors is an integer number (2072592405).

Almost surely, 2^20012053345 is an apocalyptic number.

It is an amenable number.

20012053345 is a deficient number, since it is larger than the sum of its proper divisors (4859055515).

20012053345 is an equidigital number, since it uses as much as digits as its factorization.

20012053345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4759172 (or 4759143 counting only the distinct ones).

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

Adding to 20012053345 its reverse (54335021002), we get a palindrome (74347074347).

The spelling of 20012053345 in words is "twenty billion, twelve million, fifty-three thousand, three hundred forty-five".