203120081541 has 32 divisors (see below), whose sum is σ = 324969120000. Its totient is φ = 124648714944.

The previous prime is 203120081537. The next prime is 203120081587. The reversal of 203120081541 is 145180021302.

203120081541 is a `hidden beast` number, since 20 + 3 + 1 + 20 + 0 + 81 + 541 = 666.

It is not a de Polignac number, because 203120081541 - 2² = 203120081537 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203120081501) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 679966 + ... + 931983.

It is an arithmetic number, because the mean of its divisors is an integer number (10155285000).

Almost surely, 2^203120081541 is an apocalyptic number.

It is an amenable number.

203120081541 is a deficient number, since it is larger than the sum of its proper divisors (121849038459).

203120081541 is a wasteful number, since it uses less digits than its factorization.

203120081541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1612330 (or 1612324 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The spelling of 203120081541 in words is "two hundred three billion, one hundred twenty million, eighty-one thousand, five hundred forty-one".