38724407146665 has 48 divisors (see below), whose sum is σ = 71125055434368. Its totient is φ = 19423260953088.

The previous prime is 38724407146661. The next prime is 38724407146673. The reversal of 38724407146665 is 56664170442783.

It is not a de Polignac number, because 38724407146665 - 2² = 38724407146661 is a prime.

It is not an unprimeable number, because it can be changed into a prime (38724407146661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 18365157 + ... + 20364866.

It is an arithmetic number, because the mean of its divisors is an integer number (1481771988216).

Almost surely, 2^{38724407146665} is an apocalyptic number.

It is an amenable number.

38724407146665 is a deficient number, since it is larger than the sum of its proper divisors (32400648287703).

38724407146665 is a wasteful number, since it uses less digits than its factorization.

38724407146665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38731358 (or 38731355 counting only the distinct ones).

The product of its (nonzero) digits is 162570240, while the sum is 63.

The spelling of 38724407146665 in words is "thirty-eight trillion, seven hundred twenty-four billion, four hundred seven million, one hundred forty-six thousand, six hundred sixty-five".