1238711161968 has 120 divisors (see below), whose sum is σ = 4136059449360. Its totient is φ = 353917468800.

The previous prime is 1238711161867. The next prime is 1238711161991. The reversal of 1238711161968 is 8691611178321.

1238711161968 is a `hidden beast` number, since 1 + 2 + 3 + 8 + 7 + 1 + 11 + 619 + 6 + 8 = 666.

It is a super-2 number, since 2×1238711161968² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 29237883 + ... + 29280218.

It is an arithmetic number, because the mean of its divisors is an integer number (34467162078).

Almost surely, 2^{1238711161968} is an apocalyptic number.

1238711161968 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1238711161968 is an abundant number, since it is smaller than the sum of its proper divisors (2897348287392).

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

1238711161968 is a wasteful number, since it uses less digits than its factorization.

1238711161968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58518132 (or 58518113 counting only the distinct ones).

The product of its digits is 870912, while the sum is 54.

The spelling of 1238711161968 in words is "one trillion, two hundred thirty-eight billion, seven hundred eleven million, one hundred sixty-one thousand, nine hundred sixty-eight".