8081625623464 has 8 divisors (see below), whose sum is σ = 15153048044010. Its totient is φ = 4040812811728.

The previous prime is 8081625623419. The next prime is 8081625623501. The reversal of 8081625623464 is 4643265261808.

It can be written as a sum of positive squares in only one way, i.e., 7945870220964 + 135755402500 = 2818842^2 + 368450^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 505101601459 + ... + 505101601474.

Almost surely, 2^{8081625623464} is an apocalyptic number.

It is an amenable number.

8081625623464 is a deficient number, since it is larger than the sum of its proper divisors (7071422420546).

8081625623464 is a wasteful number, since it uses less digits than its factorization.

8081625623464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1010203202939 (or 1010203202935 counting only the distinct ones).

The product of its (nonzero) digits is 13271040, while the sum is 55.

The spelling of 8081625623464 in words is "eight trillion, eighty-one billion, six hundred twenty-five million, six hundred twenty-three thousand, four hundred sixty-four".