117721672266 has 32 divisors (see below), whose sum is σ = 263789108928. Its totient is φ = 34709091840.

The previous prime is 117721672241. The next prime is 117721672273. The reversal of 117721672266 is 662276127711.

It is a super-2 number, since 2×117721672266² (a number of 23 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24101095 + ... + 24105978.

It is an arithmetic number, because the mean of its divisors is an integer number (8243409654).

Almost surely, 2^117721672266 is an apocalyptic number.

117721672266 is an abundant number, since it is smaller than the sum of its proper divisors (146067436662).

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

117721672266 is a wasteful number, since it uses less digits than its factorization.

117721672266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48207126.

The product of its digits is 592704, while the sum is 48.

Adding to 117721672266 its reverse (662276127711), we get a palindrome (779997799977).

Subtracting 117721672266 from its reverse (662276127711), we obtain a palindrome (544554455445).

It can be divided in two parts, 117721 and 672266, that added together give a palindrome (789987).

The spelling of 117721672266 in words is "one hundred seventeen billion, seven hundred twenty-one million, six hundred seventy-two thousand, two hundred sixty-six".