8452455981 has 16 divisors (see below), whose sum is σ = 11959488000. Its totient is φ = 5291675648.

The previous prime is 8452455929. The next prime is 8452455989. The reversal of 8452455981 is 1895542548.

It is a cyclic number.

It is not a de Polignac number, because 8452455981 - 2⁷ = 8452455853 is a prime.

It is a super-2 number, since 2×8452455981² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8452455989) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 161661 + ... + 207458.

It is an arithmetic number, because the mean of its divisors is an integer number (747468000).

Almost surely, 2^8452455981 is an apocalyptic number.

It is an amenable number.

8452455981 is a deficient number, since it is larger than the sum of its proper divisors (3507032019).

8452455981 is a wasteful number, since it uses less digits than its factorization.

8452455981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 369588.

The product of its digits is 2304000, while the sum is 51.

The square root of 8452455981 is about 91937.2393592499. The cubic root of 8452455981 is about 2037.0153699319.

The spelling of 8452455981 in words is "eight billion, four hundred fifty-two million, four hundred fifty-five thousand, nine hundred eighty-one".