672640102261 has 8 divisors (see below), whose sum is σ = 676678363200. Its totient is φ = 668607543552.

The previous prime is 672640102259. The next prime is 672640102291. The reversal of 672640102261 is 162201046276.

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

It is a cyclic number.

It is not a de Polignac number, because 672640102261 - 2¹ = 672640102259 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 672640102261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (672640102231) 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, 1188811 + ... + 1660888.

It is an arithmetic number, because the mean of its divisors is an integer number (84584795400).

Almost surely, 2^672640102261 is an apocalyptic number.

It is an amenable number.

672640102261 is a deficient number, since it is larger than the sum of its proper divisors (4038260939).

672640102261 is a wasteful number, since it uses less digits than its factorization.

672640102261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2851115.

The product of its (nonzero) digits is 48384, while the sum is 37.

The spelling of 672640102261 in words is "six hundred seventy-two billion, six hundred forty million, one hundred two thousand, two hundred sixty-one".