2020153123449 has 12 divisors (see below), whose sum is σ = 2921139978900. Its totient is φ = 1345319046144.

The previous prime is 2020153123369. The next prime is 2020153123531. The reversal of 2020153123449 is 9443213510202.

2020153123449 is a `hidden beast` number, since 2 + 0 + 201 + 5 + 3 + 1 + 2 + 3 + 449 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1104769166400 + 915383957049 = 1051080^2 + 956757^2 .

It is not a de Polignac number, because 2020153123449 - 2⁸ = 2020153123193 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2020153123049) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 120799744 + ... + 120816465.

It is an arithmetic number, because the mean of its divisors is an integer number (243428331575).

Almost surely, 2^{2020153123449} is an apocalyptic number.

It is an amenable number.

2020153123449 is a deficient number, since it is larger than the sum of its proper divisors (900986855451).

2020153123449 is a wasteful number, since it uses less digits than its factorization.

2020153123449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241617144 (or 241617141 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The spelling of 2020153123449 in words is "two trillion, twenty billion, one hundred fifty-three million, one hundred twenty-three thousand, four hundred forty-nine".