117782985667369 has 9 divisors (see below), whose sum is σ = 129464074143831. Its totient is φ = 107075332987920.

The previous prime is 117782985667273. The next prime is 117782985667463. The reversal of 117782985667369 is 963766589287711.

The square root of 117782985667369 is 10852787.

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., 76601092362025 + 41181893305344 = 8752205^2 + 6417312^2 .

It is not a de Polignac number, because 117782985667369 - 2¹⁷ = 117782985536297 is a prime.

It is a super-2 number, since 2×117782985667369² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (117782985617369) 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, 118887349 + ... + 119873965.

Almost surely, 2^{117782985667369} is an apocalyptic number.

117782985667369 is the 10852787-th square number.

117782985667369 is the 5426394-th centered octagonal number.

It is an amenable number.

117782985667369 is a deficient number, since it is larger than the sum of its proper divisors (11681088476462).

117782985667369 is an frugal number, since it uses more digits than its factorization.

117782985667369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1973256 (or 986628 counting only the distinct ones).

The product of its digits is 11522165760, while the sum is 85.

The spelling of 117782985667369 in words is "one hundred seventeen trillion, seven hundred eighty-two billion, nine hundred eighty-five million, six hundred sixty-seven thousand, three hundred sixty-nine".