117920493769 has 12 divisors (see below), whose sum is σ = 127744778700. Its totient is φ = 108802185024.

The previous prime is 117920493731. The next prime is 117920493787. The reversal of 117920493769 is 967394029711.

It can be written as a sum of positive squares in 6 ways, for example, as 15464166025 + 102456327744 = 124355^2 + 320088^2 .

It is not a de Polignac number, because 117920493769 - 2¹³ = 117920485577 is a prime.

It is a super-2 number, since 2×117920493769² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (117920493799) 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, 239127 + ... + 541315.

It is an arithmetic number, because the mean of its divisors is an integer number (10645398225).

Almost surely, 2^117920493769 is an apocalyptic number.

It is an amenable number.

117920493769 is a deficient number, since it is larger than the sum of its proper divisors (9824284931).

117920493769 is a wasteful number, since it uses less digits than its factorization.

117920493769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 304524 (or 304511 counting only the distinct ones).

The product of its (nonzero) digits is 5143824, while the sum is 58.

The spelling of 117920493769 in words is "one hundred seventeen billion, nine hundred twenty million, four hundred ninety-three thousand, seven hundred sixty-nine".