38987797663867 has 4 divisors (see below), whose sum is σ = 41986859022640. Its totient is φ = 35988736305096.

The previous prime is 38987797663847. The next prime is 38987797663897. The reversal of 38987797663867 is 76836679778983.

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

It is a cyclic number.

It is not a de Polignac number, because 38987797663867 - 2¹⁵ = 38987797631099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38987797663847) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1499530679367 + ... + 1499530679392.

It is an arithmetic number, because the mean of its divisors is an integer number (10496714755660).

Almost surely, 2^{38987797663867} is an apocalyptic number.

38987797663867 is a deficient number, since it is larger than the sum of its proper divisors (2999061358773).

38987797663867 is a wasteful number, since it uses less digits than its factorization.

38987797663867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2999061358772.

The product of its digits is 193572384768, while the sum is 94.

The spelling of 38987797663867 in words is "thirty-eight trillion, nine hundred eighty-seven billion, seven hundred ninety-seven million, six hundred sixty-three thousand, eight hundred sixty-seven".