8137408226640 has 320 divisors, whose sum is σ = 32817971515392. Its totient is φ = 1617372979200.

The previous prime is 8137408226611. The next prime is 8137408226641. The reversal of 8137408226640 is 466228047318.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8137408226641) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 9147481 + ... + 9997560.

Almost surely, 2^{8137408226640} is an apocalyptic number.

8137408226640 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

8137408226640 is an abundant number, since it is smaller than the sum of its proper divisors (24680563288752).

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

8137408226640 is a wasteful number, since it uses less digits than its factorization.

8137408226640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19145098 (or 19145092 counting only the distinct ones).

The product of its (nonzero) digits is 3096576, while the sum is 51.

The spelling of 8137408226640 in words is "eight trillion, one hundred thirty-seven billion, four hundred eight million, two hundred twenty-six thousand, six hundred forty".