1375663914769 has 9 divisors (see below), whose sum is σ = 1410084345211. Its totient is φ = 1342064220880.

The previous prime is 1375663914761. The next prime is 1375663914773. The reversal of 1375663914769 is 9674193665731.

The square root of 1375663914769 is 1172887.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 66287196369 + 1309376718400 = 257463^2 + 1144280^2 .

It is not a de Polignac number, because 1375663914769 - 2³ = 1375663914761 is a prime.

It is a super-2 number, since 2×1375663914769² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1375663914761) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 48074064 + ... + 48102670.

Almost surely, 2^{1375663914769} is an apocalyptic number.

1375663914769 is the 1172887-th square number.

1375663914769 is the 586444-th centered octagonal number.

It is an amenable number.

1375663914769 is a deficient number, since it is larger than the sum of its proper divisors (34420430442).

1375663914769 is an frugal number, since it uses more digits than its factorization.

1375663914769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57296 (or 28648 counting only the distinct ones).

The product of its digits is 154314720, while the sum is 67.

The spelling of 1375663914769 in words is "one trillion, three hundred seventy-five billion, six hundred sixty-three million, nine hundred fourteen thousand, seven hundred sixty-nine".