281020164778152 has 48 divisors (see below), whose sum is σ = 761159146119840. Its totient is φ = 93665650842528.

The previous prime is 281020164778141. The next prime is 281020164778181. The reversal of 281020164778152 is 251877461020182.

281020164778152 is a `hidden beast` number, since 2 + 8 + 1 + 0 + 2 + 0 + 16 + 477 + 8 + 152 = 666.

281020164778152 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 160318428 + ... + 162061835.

It is an arithmetic number, because the mean of its divisors is an integer number (15857482210830).

Almost surely, 2^{281020164778152} is an apocalyptic number.

It is an amenable number.

281020164778152 is an abundant number, since it is smaller than the sum of its proper divisors (480138981341688).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

281020164778152 is a wasteful number, since it uses less digits than its factorization.

281020164778152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 322392382 (or 322392375 counting only the distinct ones).

The product of its (nonzero) digits is 3010560, while the sum is 54.

The spelling of 281020164778152 in words is "two hundred eighty-one trillion, twenty billion, one hundred sixty-four million, seven hundred seventy-eight thousand, one hundred fifty-two".