12840722057618 has 32 divisors (see below), whose sum is σ = 23790311314560. Its totient is φ = 5061768324480.

The previous prime is 12840722057617. The next prime is 12840722057633. The reversal of 12840722057618 is 81675022704821.

It is a self number, because there is not a number n which added to its sum of digits gives 12840722057618.

It is not an unprimeable number, because it can be changed into a prime (12840722057617) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 125488748 + ... + 125591031.

It is an arithmetic number, because the mean of its divisors is an integer number (743447228580).

Almost surely, 2^{12840722057618} is an apocalyptic number.

12840722057618 is a deficient number, since it is larger than the sum of its proper divisors (10949589256942).

12840722057618 is a wasteful number, since it uses less digits than its factorization.

12840722057618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251080082.

The product of its (nonzero) digits is 3010560, while the sum is 53.

The spelling of 12840722057618 in words is "twelve trillion, eight hundred forty billion, seven hundred twenty-two million, fifty-seven thousand, six hundred eighteen".