149787488861 has 2 divisors, whose sum is σ = 149787488862. Its totient is φ = 149787488860.

The previous prime is 149787488813. The next prime is 149787488863. The reversal of 149787488861 is 168884787941.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 113761171225 + 36026317636 = 337285^2 + 189806^2 .

It is a cyclic number.

It is not a de Polignac number, because 149787488861 - 2⁶ = 149787488797 is a prime.

Together with 149787488863, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (149787488863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74893744430 + 74893744431.

It is an arithmetic number, because the mean of its divisors is an integer number (74893744431).

Almost surely, 2^149787488861 is an apocalyptic number.

It is an amenable number.

149787488861 is a deficient number, since it is larger than the sum of its proper divisors (1).

149787488861 is an equidigital number, since it uses as much as digits as its factorization.

149787488861 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 173408256, while the sum is 71.

The spelling of 149787488861 in words is "one hundred forty-nine billion, seven hundred eighty-seven million, four hundred eighty-eight thousand, eight hundred sixty-one".