136943198487 has 12 divisors (see below), whose sum is σ = 201049578184. Its totient is φ = 89798818320.

The previous prime is 136943198477. The next prime is 136943198519. The reversal of 136943198487 is 784891349631.

136943198487 is a `hidden beast` number, since 1 + 3 + 69 + 4 + 3 + 1 + 98 + 487 = 666.

It is not a de Polignac number, because 136943198487 - 2⁶ = 136943198423 is a prime.

It is a super-2 number, since 2×136943198487² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136943198467) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 124720033 + ... + 124721130.

Almost surely, 2^136943198487 is an apocalyptic number.

136943198487 is a deficient number, since it is larger than the sum of its proper divisors (64106379697).

136943198487 is a wasteful number, since it uses less digits than its factorization.

136943198487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249441230 (or 249441227 counting only the distinct ones).

The product of its digits is 31352832, while the sum is 63.

The spelling of 136943198487 in words is "one hundred thirty-six billion, nine hundred forty-three million, one hundred ninety-eight thousand, four hundred eighty-seven".