4640721127065 has 96 divisors (see below), whose sum is σ = 8141163503616. Its totient is φ = 2445321191040.

The previous prime is 4640721126997. The next prime is 4640721127067. The reversal of 4640721127065 is 5607211270464.

4640721127065 is a `hidden beast` number, since 4 + 6 + 407 + 2 + 112 + 70 + 65 = 666.

It is not a de Polignac number, because 4640721127065 - 2⁸ = 4640721126809 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 4640721127065.

It is not an unprimeable number, because it can be changed into a prime (4640721127067) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1607453052 + ... + 1607455938.

It is an arithmetic number, because the mean of its divisors is an integer number (84803786496).

Almost surely, 2^{4640721127065} is an apocalyptic number.

4640721127065 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

4640721127065 is a deficient number, since it is larger than the sum of its proper divisors (3500442376551).

4640721127065 is a wasteful number, since it uses less digits than its factorization.

4640721127065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4139 (or 4136 counting only the distinct ones).

The product of its (nonzero) digits is 564480, while the sum is 45.

The spelling of 4640721127065 in words is "four trillion, six hundred forty billion, seven hundred twenty-one million, one hundred twenty-seven thousand, sixty-five".