38961916564987 has 8 divisors (see below), whose sum is σ = 42585240609296. Its totient is φ = 35428057312032.

The previous prime is 38961916564873. The next prime is 38961916565053. The reversal of 38961916564987 is 78946561916983.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 38961916564987 - 2²³ = 38961908176379 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 38961916564987.

It is not an unprimeable number, because it can be changed into a prime (38961916568987) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22366196928 + ... + 22366198669.

It is an arithmetic number, because the mean of its divisors is an integer number (5323155076162).

Almost surely, 2^{38961916564987} is an apocalyptic number.

38961916564987 is a deficient number, since it is larger than the sum of its proper divisors (3623324044309).

38961916564987 is a wasteful number, since it uses less digits than its factorization.

38961916564987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44732395677.

The product of its digits is 4232632320, while the sum is 82.

The spelling of 38961916564987 in words is "thirty-eight trillion, nine hundred sixty-one billion, nine hundred sixteen million, five hundred sixty-four thousand, nine hundred eighty-seven".