38672172047 has 4 divisors (see below), whose sum is σ = 38709609840. Its totient is φ = 38634734256.

The previous prime is 38672172041. The next prime is 38672172053. The reversal of 38672172047 is 74027127683.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (38672172041) and next prime (38672172053).

It is a cyclic number.

It is not a de Polignac number, because 38672172047 - 2⁴ = 38672172031 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 38672171992 and 38672172010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38672172041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18717347 + ... + 18719412.

It is an arithmetic number, because the mean of its divisors is an integer number (9677402460).

Almost surely, 2^38672172047 is an apocalyptic number.

38672172047 is a deficient number, since it is larger than the sum of its proper divisors (37437793).

38672172047 is a wasteful number, since it uses less digits than its factorization.

38672172047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37437792.

The product of its (nonzero) digits is 790272, while the sum is 47.

The spelling of 38672172047 in words is "thirty-eight billion, six hundred seventy-two million, one hundred seventy-two thousand, forty-seven".