38640265147 has 16 divisors (see below), whose sum is σ = 43364201472. Its totient is φ = 34129107520.

The previous prime is 38640265133. The next prime is 38640265201. The reversal of 38640265147 is 74156204683.

It is a cyclic number.

It is not a de Polignac number, because 38640265147 - 2³¹ = 36492781499 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 38640265097 and 38640265106.

It is not an unprimeable number, because it can be changed into a prime (38640265117) 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 15 ways as a sum of consecutive naturals, for example, 201943 + ... + 343600.

It is an arithmetic number, because the mean of its divisors is an integer number (2710262592).

Almost surely, 2^38640265147 is an apocalyptic number.

38640265147 is a deficient number, since it is larger than the sum of its proper divisors (4723936325).

38640265147 is a wasteful number, since it uses less digits than its factorization.

38640265147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 545738.

The product of its (nonzero) digits is 967680, while the sum is 46.

The spelling of 38640265147 in words is "thirty-eight billion, six hundred forty million, two hundred sixty-five thousand, one hundred forty-seven".