116665651501 has 4 divisors (see below), whose sum is σ = 133332173152. Its totient is φ = 99999129852.

The previous prime is 116665651499. The next prime is 116665651507. The reversal of 116665651501 is 105156566611.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 116665651501 - 2¹ = 116665651499 is a prime.

It is a super-2 number, since 2×116665651501² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (116665651507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8333260815 + ... + 8333260828.

It is an arithmetic number, because the mean of its divisors is an integer number (33333043288).

Almost surely, 2^116665651501 is an apocalyptic number.

It is an amenable number.

116665651501 is a deficient number, since it is larger than the sum of its proper divisors (16666521651).

116665651501 is an equidigital number, since it uses as much as digits as its factorization.

116665651501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16666521650.

The product of its (nonzero) digits is 162000, while the sum is 43.

The spelling of 116665651501 in words is "one hundred sixteen billion, six hundred sixty-five million, six hundred fifty-one thousand, five hundred one".