2661872001 has 8 divisors (see below), whose sum is σ = 3591924000. Its totient is φ = 1753200672.

The previous prime is 2661871997. The next prime is 2661872023. The reversal of 2661872001 is 1002781662.

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

It is not a de Polignac number, because 2661872001 - 2² = 2661871997 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2661874001) 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, 5344876 + ... + 5345373.

It is an arithmetic number, because the mean of its divisors is an integer number (448990500).

Almost surely, 2^2661872001 is an apocalyptic number.

It is an amenable number.

2661872001 is a deficient number, since it is larger than the sum of its proper divisors (930051999).

2661872001 is a wasteful number, since it uses less digits than its factorization.

2661872001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10690335.

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 2661872001 is about 51593.3329123056. The cubic root of 2661872001 is about 1385.8909412178.

The spelling of 2661872001 in words is "two billion, six hundred sixty-one million, eight hundred seventy-two thousand, one".