1376716969728 has 108 divisors (see below), whose sum is σ = 3971346692040. Its totient is φ = 458682267648.

The previous prime is 1376716969721. The next prime is 1376716969781. The reversal of 1376716969728 is 8279696176731.

It is a happy number.

1376716969728 is a `hidden beast` number, since 1 + 376 + 7 + 169 + 6 + 97 + 2 + 8 = 666.

It is a super-2 number, since 2×1376716969728² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1376716969721) 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, 4622575 + ... + 4911377.

It is an arithmetic number, because the mean of its divisors is an integer number (36771728630).

Almost surely, 2^{1376716969728} is an apocalyptic number.

1376716969728 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1376716969728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1985673346020).

1376716969728 is an abundant number, since it is smaller than the sum of its proper divisors (2594629722312).

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

1376716969728 is a wasteful number, since it uses less digits than its factorization.

1376716969728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 290894 (or 290877 counting only the distinct ones).

The product of its digits is 288054144, while the sum is 72.

The spelling of 1376716969728 in words is "one trillion, three hundred seventy-six billion, seven hundred sixteen million, nine hundred sixty-nine thousand, seven hundred twenty-eight".