2640134634261 has 8 divisors (see below), whose sum is σ = 3520447076160. Its totient is φ = 1759955974272.

The previous prime is 2640134634229. The next prime is 2640134634271. The reversal of 2640134634261 is 1624364310462.

2640134634261 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 2640134634261 - 2⁵ = 2640134634229 is a prime.

It is a super-2 number, since 2×2640134634261² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2640134634271) 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, 33399420 + ... + 33478373.

It is an arithmetic number, because the mean of its divisors is an integer number (440055884520).

Almost surely, 2^{2640134634261} is an apocalyptic number.

It is an amenable number.

2640134634261 is a deficient number, since it is larger than the sum of its proper divisors (880312441899).

2640134634261 is a wasteful number, since it uses less digits than its factorization.

2640134634261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66890955.

The product of its (nonzero) digits is 497664, while the sum is 42.

The spelling of 2640134634261 in words is "two trillion, six hundred forty billion, one hundred thirty-four million, six hundred thirty-four thousand, two hundred sixty-one".