281608252155105 has 16 divisors (see below), whose sum is σ = 454947700571520. Its totient is φ = 148732902108288.

The previous prime is 281608252155101. The next prime is 281608252155179. The reversal of 281608252155105 is 501551252806182.

It is not a de Polignac number, because 281608252155105 - 2² = 281608252155101 is a prime.

It is a super-2 number, since 2×281608252155105² (a number of 30 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (281608252155101) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 91135355140 + ... + 91135358229.

It is an arithmetic number, because the mean of its divisors is an integer number (28434231285720).

Almost surely, 2^{281608252155105} is an apocalyptic number.

It is an amenable number.

281608252155105 is a deficient number, since it is larger than the sum of its proper divisors (173339448416415).

281608252155105 is a wasteful number, since it uses less digits than its factorization.

281608252155105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182270713480.

The product of its (nonzero) digits is 1920000, while the sum is 51.

The spelling of 281608252155105 in words is "two hundred eighty-one trillion, six hundred eight billion, two hundred fifty-two million, one hundred fifty-five thousand, one hundred five".