2601621167 has 4 divisors (see below), whose sum is σ = 2601898200. Its totient is φ = 2601344136.

The previous prime is 2601621157. The next prime is 2601621181. The reversal of 2601621167 is 7611261062.

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

It is a cyclic number.

It is not a de Polignac number, because 2601621167 - 2¹² = 2601617071 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 (2601621157) 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, 123917 + ... + 143382.

It is an arithmetic number, because the mean of its divisors is an integer number (650474550).

Almost surely, 2^2601621167 is an apocalyptic number.

2601621167 is a deficient number, since it is larger than the sum of its proper divisors (277033).

2601621167 is an equidigital number, since it uses as much as digits as its factorization.

2601621167 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277032.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 2601621167 is about 51006.0895089988. The cubic root of 2601621167 is about 1375.3546046518.

The spelling of 2601621167 in words is "two billion, six hundred one million, six hundred twenty-one thousand, one hundred sixty-seven".