8081140645 has 16 divisors (see below), whose sum is σ = 9796026240. Its totient is φ = 6399259200.

The previous prime is 8081140589. The next prime is 8081140657. The reversal of 8081140645 is 5460411808.

It is not a de Polignac number, because 8081140645 - 2¹³ = 8081132453 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 587800 + ... + 601390.

It is an arithmetic number, because the mean of its divisors is an integer number (612251640).

Almost surely, 2^8081140645 is an apocalyptic number.

It is an amenable number.

8081140645 is a deficient number, since it is larger than the sum of its proper divisors (1714885595).

8081140645 is a wasteful number, since it uses less digits than its factorization.

8081140645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14796.

The product of its (nonzero) digits is 30720, while the sum is 37.

The square root of 8081140645 is about 89895.1647476103. The cubic root of 8081140645 is about 2006.7389879338.

The spelling of 8081140645 in words is "eight billion, eighty-one million, one hundred forty thousand, six hundred forty-five".