744700164021 has 12 divisors (see below), whose sum is σ = 1173466925280. Its totient is φ = 451333432680.

The previous prime is 744700164011. The next prime is 744700164053. The reversal of 744700164021 is 120461007447.

It is a happy number.

744700164021 is a `hidden beast` number, since 7 + 4 + 4 + 7 + 0 + 0 + 1 + 640 + 2 + 1 = 666.

It is not a de Polignac number, because 744700164021 - 2²¹ = 744698066869 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (744700164011) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3761111841 + ... + 3761112038.

It is an arithmetic number, because the mean of its divisors is an integer number (97788910440).

Almost surely, 2^744700164021 is an apocalyptic number.

It is an amenable number.

744700164021 is a deficient number, since it is larger than the sum of its proper divisors (428766761259).

744700164021 is a wasteful number, since it uses less digits than its factorization.

744700164021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7522223896 (or 7522223893 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 36.

The spelling of 744700164021 in words is "seven hundred forty-four billion, seven hundred million, one hundred sixty-four thousand, twenty-one".