138624197646487 has 16 divisors (see below), whose sum is σ = 164070921828352. Its totient is φ = 114613260521760.

The previous prime is 138624197646439. The next prime is 138624197646491. The reversal of 138624197646487 is 784646791426831.

It is a happy number.

It is not a de Polignac number, because 138624197646487 - 2³⁹ = 138074441832599 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138624197646587) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1040358768 + ... + 1040492005.

It is an arithmetic number, because the mean of its divisors is an integer number (10254432614272).

Almost surely, 2^{138624197646487} is an apocalyptic number.

138624197646487 is a deficient number, since it is larger than the sum of its proper divisors (25446724181865).

138624197646487 is a wasteful number, since it uses less digits than its factorization.

138624197646487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2080851118.

The product of its digits is 2341011456, while the sum is 76.

The spelling of 138624197646487 in words is "one hundred thirty-eight trillion, six hundred twenty-four billion, one hundred ninety-seven million, six hundred forty-six thousand, four hundred eighty-seven".