117283939477 has 4 divisors (see below), whose sum is σ = 117286885996. Its totient is φ = 117280992960.

The previous prime is 117283939463. The next prime is 117283939501. The reversal of 117283939477 is 774939382711.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4071205636 + 113212733841 = 63806^2 + 336471^2 .

It is a cyclic number.

It is not a de Polignac number, because 117283939477 - 2⁷ = 117283939349 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117283931477) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1412724 + ... + 1493437.

It is an arithmetic number, because the mean of its divisors is an integer number (29321721499).

Almost surely, 2^117283939477 is an apocalyptic number.

It is an amenable number.

117283939477 is a deficient number, since it is larger than the sum of its proper divisors (2946519).

117283939477 is an equidigital number, since it uses as much as digits as its factorization.

117283939477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2946518.

The product of its digits is 16003008, while the sum is 61.

The spelling of 117283939477 in words is "one hundred seventeen billion, two hundred eighty-three million, nine hundred thirty-nine thousand, four hundred seventy-seven".