201531403045545 has 16 divisors (see below), whose sum is σ = 322467235172160. Its totient is φ = 107477751524544.

The previous prime is 201531403045519. The next prime is 201531403045613. The reversal of 201531403045545 is 545540304135102.

It is not a de Polignac number, because 201531403045545 - 2²⁵ = 201531369491113 is a prime.

It is a super-2 number, since 2×201531403045545² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 201531403045497 and 201531403045506.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 353670394 + ... + 354239763.

It is an arithmetic number, because the mean of its divisors is an integer number (20154202198260).

Almost surely, 2^{201531403045545} is an apocalyptic number.

It is an amenable number.

201531403045545 is a deficient number, since it is larger than the sum of its proper divisors (120935832126615).

201531403045545 is a wasteful number, since it uses less digits than its factorization.

201531403045545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 707929144.

The product of its (nonzero) digits is 720000, while the sum is 42.

The spelling of 201531403045545 in words is "two hundred one trillion, five hundred thirty-one billion, four hundred three million, forty-five thousand, five hundred forty-five".