81150160456 has 32 divisors (see below), whose sum is σ = 154137412800. Its totient is φ = 40050227520.

The previous prime is 81150160411. The next prime is 81150160457. The reversal of 81150160456 is 65406105118.

It is a super-2 number, since 2×81150160456² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (81150160457) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18540 + ... + 403291.

It is an arithmetic number, because the mean of its divisors is an integer number (4816794150).

Almost surely, 2^81150160456 is an apocalyptic number.

It is an amenable number.

81150160456 is a deficient number, since it is larger than the sum of its proper divisors (72987252344).

81150160456 is a wasteful number, since it uses less digits than its factorization.

81150160456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 422149 (or 422145 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 37.

The spelling of 81150160456 in words is "eighty-one billion, one hundred fifty million, one hundred sixty thousand, four hundred fifty-six".