8040508640 has 48 divisors (see below), whose sum is σ = 19048750560. Its totient is φ = 3207221760.

The previous prime is 8040508633. The next prime is 8040508643. The reversal of 8040508640 is 468050408.

It is a self number, because there is not a number n which added to its sum of digits gives 8040508640.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8040508643) 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, 12551 + ... + 127430.

It is an arithmetic number, because the mean of its divisors is an integer number (396848970).

Almost surely, 2^8040508640 is an apocalyptic number.

8040508640 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

8040508640 is an abundant number, since it is smaller than the sum of its proper divisors (11008241920).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8040508640 is a wasteful number, since it uses less digits than its factorization.

8040508640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140355 (or 140347 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 35.

The square root of 8040508640 is about 89668.8833431085. The cubic root of 8040508640 is about 2003.3700382317.

The spelling of 8040508640 in words is "eight billion, forty million, five hundred eight thousand, six hundred forty".