894102156081 has 24 divisors (see below), whose sum is σ = 1294219555200. Its totient is φ = 594805245216.

The previous prime is 894102156043. The next prime is 894102156083. The reversal of 894102156081 is 180651201498.

It is a happy number.

894102156081 is a `hidden beast` number, since 8 + 9 + 4 + 1 + 0 + 2 + 1 + 560 + 81 = 666.

It is not a de Polignac number, because 894102156081 - 2⁷ = 894102155953 is a prime.

It is a super-2 number, since 2×894102156081² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (894102156083) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9598870 + ... + 9691568.

It is an arithmetic number, because the mean of its divisors is an integer number (53925814800).

Almost surely, 2^894102156081 is an apocalyptic number.

It is an amenable number.

894102156081 is a deficient number, since it is larger than the sum of its proper divisors (400117399119).

894102156081 is a wasteful number, since it uses less digits than its factorization.

894102156081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94965 (or 94962 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 45.

The spelling of 894102156081 in words is "eight hundred ninety-four billion, one hundred two million, one hundred fifty-six thousand, eighty-one".