255857201547651 has 16 divisors (see below), whose sum is σ = 413506588360320. Its totient is φ = 155064970634760.

The previous prime is 255857201547637. The next prime is 255857201547697. The reversal of 255857201547651 is 156745102758552.

255857201547651 is a `hidden beast` number, since 2 + 5 + 5 + 8 + 5 + 7 + 20 + 1 + 547 + 65 + 1 = 666.

It is not a de Polignac number, because 255857201547651 - 2²¹ = 255857199450499 is a prime.

It is not an unprimeable number, because it can be changed into a prime (255857201547611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 430736029245 + ... + 430736029838.

It is an arithmetic number, because the mean of its divisors is an integer number (25844161772520).

Almost surely, 2^{255857201547651} is an apocalyptic number.

255857201547651 is a deficient number, since it is larger than the sum of its proper divisors (157649386812669).

255857201547651 is a wasteful number, since it uses less digits than its factorization.

255857201547651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 861472059103 (or 861472059097 counting only the distinct ones).

The product of its (nonzero) digits is 117600000, while the sum is 63.

The spelling of 255857201547651 in words is "two hundred fifty-five trillion, eight hundred fifty-seven billion, two hundred one million, five hundred forty-seven thousand, six hundred fifty-one".