139216746987 has 24 divisors (see below), whose sum is σ = 212934037680. Its totient is φ = 87345815040.

The previous prime is 139216746947. The next prime is 139216747037. The reversal of 139216746987 is 789647612931.

139216746987 is a `hidden beast` number, since 1 + 3 + 9 + 2 + 167 + 469 + 8 + 7 = 666.

It is not a de Polignac number, because 139216746987 - 2⁷ = 139216746859 is a prime.

It is not an unprimeable number, because it can be changed into a prime (139216746947) 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 23 ways as a sum of consecutive naturals, for example, 3900412 + ... + 3935942.

It is an arithmetic number, because the mean of its divisors is an integer number (8872251570).

Almost surely, 2^139216746987 is an apocalyptic number.

139216746987 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

139216746987 is a deficient number, since it is larger than the sum of its proper divisors (73717290693).

139216746987 is a wasteful number, since it uses less digits than its factorization.

139216746987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61163 (or 61160 counting only the distinct ones).

The product of its digits is 27433728, while the sum is 63.

The spelling of 139216746987 in words is "one hundred thirty-nine billion, two hundred sixteen million, seven hundred forty-six thousand, nine hundred eighty-seven".