4640421175455 has 64 divisors (see below), whose sum is σ = 8463655872000. Its totient is φ = 2152186163712.

The previous prime is 4640421175433. The next prime is 4640421175459. The reversal of 4640421175455 is 5545711240464.

It is a happy number.

It is not a de Polignac number, because 4640421175455 - 2¹¹ = 4640421173407 is a prime.

It is a super-2 number, since 2×4640421175455² (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 (4640421175459) 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 63 ways as a sum of consecutive naturals, for example, 2835340 + ... + 4161729.

It is an arithmetic number, because the mean of its divisors is an integer number (132244623000).

Almost surely, 2^{4640421175455} is an apocalyptic number.

4640421175455 is a deficient number, since it is larger than the sum of its proper divisors (3823234696545).

4640421175455 is a wasteful number, since it uses less digits than its factorization.

4640421175455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6997288.

The product of its (nonzero) digits is 2688000, while the sum is 48.

The spelling of 4640421175455 in words is "four trillion, six hundred forty billion, four hundred twenty-one million, one hundred seventy-five thousand, four hundred fifty-five".