7285855888881 has 32 divisors (see below), whose sum is σ = 10804555537920. Its totient is φ = 4852426172112.

The previous prime is 7285855888837. The next prime is 7285855888903. The reversal of 7285855888881 is 1888885585827.

7285855888881 is a `hidden beast` number, since 7 + 2 + 8 + 58 + 558 + 8 + 8 + 8 + 8 + 1 = 666.

It is not a de Polignac number, because 7285855888881 - 2²¹ = 7285853791729 is a prime.

It is a super-2 number, since 2×7285855888881² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 7285855888881.

It is not an unprimeable number, because it can be changed into a prime (7285855818881) 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, 186591546 + ... + 186630588.

It is an arithmetic number, because the mean of its divisors is an integer number (337642360560).

Almost surely, 2^{7285855888881} is an apocalyptic number.

It is an amenable number.

7285855888881 is a deficient number, since it is larger than the sum of its proper divisors (3518699649039).

7285855888881 is a wasteful number, since it uses less digits than its factorization.

7285855888881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45722 (or 45716 counting only the distinct ones).

The product of its digits is 3670016000, while the sum is 81.

The spelling of 7285855888881 in words is "seven trillion, two hundred eighty-five billion, eight hundred fifty-five million, eight hundred eighty-eight thousand, eight hundred eighty-one".