137987007987 has 4 divisors (see below), whose sum is σ = 183982677320. Its totient is φ = 91991338656.

The previous prime is 137987007953. The next prime is 137987007997. The reversal of 137987007987 is 789700789731.

It is a happy number.

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

It is not a de Polignac number, because 137987007987 - 2⁷ = 137987007859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (137987007937) 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, 22997834662 + ... + 22997834667.

It is an arithmetic number, because the mean of its divisors is an integer number (45995669330).

Almost surely, 2^137987007987 is an apocalyptic number.

137987007987 is a deficient number, since it is larger than the sum of its proper divisors (45995669333).

137987007987 is an equidigital number, since it uses as much as digits as its factorization.

137987007987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45995669332.

The product of its (nonzero) digits is 37340352, while the sum is 66.

The spelling of 137987007987 in words is "one hundred thirty-seven billion, nine hundred eighty-seven million, seven thousand, nine hundred eighty-seven".