156418244662218 has 128 divisors (see below), whose sum is σ = 390432108994560. Its totient is φ = 40586229073920.

The previous prime is 156418244662217. The next prime is 156418244662241. The reversal of 156418244662218 is 812266442814651.

It is not an unprimeable number, because it can be changed into a prime (156418244662217) 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, 5854620196 + ... + 5854646912.

It is an arithmetic number, because the mean of its divisors is an integer number (3050250851520).

Almost surely, 2^{156418244662218} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 156418244662218, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (195216054497280).

156418244662218 is an abundant number, since it is smaller than the sum of its proper divisors (234013864332342).

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

156418244662218 is a wasteful number, since it uses less digits than its factorization.

156418244662218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39332.

The product of its digits is 35389440, while the sum is 60.

The spelling of 156418244662218 in words is "one hundred fifty-six trillion, four hundred eighteen billion, two hundred forty-four million, six hundred sixty-two thousand, two hundred eighteen".