19118482215511 has 12 divisors (see below), whose sum is σ = 22757073280392. Its totient is φ = 16006171155408.

The previous prime is 19118482215479. The next prime is 19118482215527. The reversal of 19118482215511 is 11551228481191.

It is not a de Polignac number, because 19118482215511 - 2⁵ = 19118482215479 is a prime.

It is a super-2 number, since 2×19118482215511² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19118482215551) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4536894480 + ... + 4536898693.

It is an arithmetic number, because the mean of its divisors is an integer number (1896422773366).

Almost surely, 2^{19118482215511} is an apocalyptic number.

19118482215511 is a deficient number, since it is larger than the sum of its proper divisors (3638591064881).

19118482215511 is an equidigital number, since it uses as much as digits as its factorization.

19118482215511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9073793230 (or 9073793223 counting only the distinct ones).

The product of its digits is 230400, while the sum is 49.

The spelling of 19118482215511 in words is "nineteen trillion, one hundred eighteen billion, four hundred eighty-two million, two hundred fifteen thousand, five hundred eleven".