4640041023649 has 4 divisors (see below), whose sum is σ = 4640105512960. Its totient is φ = 4639976534340.

The previous prime is 4640041023647. The next prime is 4640041023701. The reversal of 4640041023649 is 9463201400464.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 4640041023649 - 2¹ = 4640041023647 is a prime.

It is a super-2 number, since 2×4640041023649² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4640041023641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32136609 + ... + 32280670.

It is an arithmetic number, because the mean of its divisors is an integer number (1160026378240).

Almost surely, 2^{4640041023649} is an apocalyptic number.

It is an amenable number.

4640041023649 is a deficient number, since it is larger than the sum of its proper divisors (64489311).

4640041023649 is an equidigital number, since it uses as much as digits as its factorization.

4640041023649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64489310.

The product of its (nonzero) digits is 497664, while the sum is 43.

The spelling of 4640041023649 in words is "four trillion, six hundred forty billion, forty-one million, twenty-three thousand, six hundred forty-nine".