19220718409986 has 16 divisors (see below), whose sum is σ = 39071624309568. Its totient is φ = 6301874888400.

The previous prime is 19220718409943. The next prime is 19220718409987. The reversal of 19220718409986 is 68990481702291.

It is a super-4 number, since 4×19220718409986⁴ (a number of 54 digits) contains 4444 as substring.

It is not an unprimeable number, because it can be changed into a prime (19220718409987) 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, 26257811670 + ... + 26257812401.

It is an arithmetic number, because the mean of its divisors is an integer number (2441976519348).

Almost surely, 2^{19220718409986} is an apocalyptic number.

19220718409986 is an abundant number, since it is smaller than the sum of its proper divisors (19850905899582).

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

19220718409986 is a wasteful number, since it uses less digits than its factorization.

19220718409986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52515624137.

The product of its (nonzero) digits is 31352832, while the sum is 66.

The spelling of 19220718409986 in words is "nineteen trillion, two hundred twenty billion, seven hundred eighteen million, four hundred nine thousand, nine hundred eighty-six".