8081918020907 has 8 divisors (see below), whose sum is σ = 8136230976000. Its totient is φ = 8027606024704.

The previous prime is 8081918020853. The next prime is 8081918020927. The reversal of 8081918020907 is 7090208191808.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 8081918020907 - 2¹⁰ = 8081918019883 is a prime.

It is a super-2 number, since 2×8081918020907² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8081918020927) 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, 27143819 + ... + 27439947.

It is an arithmetic number, because the mean of its divisors is an integer number (1017028872000).

Almost surely, 2^{8081918020907} is an apocalyptic number.

8081918020907 is a deficient number, since it is larger than the sum of its proper divisors (54312955093).

8081918020907 is a wasteful number, since it uses less digits than its factorization.

8081918020907 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 479445.

The product of its (nonzero) digits is 580608, while the sum is 53.

The spelling of 8081918020907 in words is "eight trillion, eighty-one billion, nine hundred eighteen million, twenty thousand, nine hundred seven".