117801951 has 8 divisors (see below), whose sum is σ = 157756080. Its totient is φ = 78191232.

The previous prime is 117801947. The next prime is 117801961. The reversal of 117801951 is 159108711.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 117801951 - 2² = 117801947 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117801961) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85050 + ... + 86423.

It is an arithmetic number, because the mean of its divisors is an integer number (19719510).

Almost surely, 2^117801951 is an apocalyptic number.

117801951 is a deficient number, since it is larger than the sum of its proper divisors (39954129).

117801951 is a wasteful number, since it uses less digits than its factorization.

117801951 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171705.

The product of its (nonzero) digits is 2520, while the sum is 33.

The square root of 117801951 is about 10853.6607188543. The cubic root of 117801951 is about 490.2122515145.

It can be divided in two parts, 11780 and 1951, that added together give a palindrome (13731).

The spelling of 117801951 in words is "one hundred seventeen million, eight hundred one thousand, nine hundred fifty-one".