4640641886267 has 4 divisors (see below), whose sum is σ = 4650093295896. Its totient is φ = 4631190476640.

The previous prime is 4640641886263. The next prime is 4640641886303. The reversal of 4640641886267 is 7626881460464.

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 4640641886267 - 2² = 4640641886263 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4640641886263) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4725704078 + ... + 4725705059.

It is an arithmetic number, because the mean of its divisors is an integer number (1162523323974).

Almost surely, 2^{4640641886267} is an apocalyptic number.

4640641886267 is a deficient number, since it is larger than the sum of its proper divisors (9451409629).

4640641886267 is an equidigital number, since it uses as much as digits as its factorization.

4640641886267 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9451409628.

The product of its (nonzero) digits is 74317824, while the sum is 62.

The spelling of 4640641886267 in words is "four trillion, six hundred forty billion, six hundred forty-one million, eight hundred eighty-six thousand, two hundred sixty-seven".