149869636871 has 2 divisors, whose sum is σ = 149869636872. Its totient is φ = 149869636870.

The previous prime is 149869636849. The next prime is 149869636901. The reversal of 149869636871 is 178636968941.

149869636871 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 149869636871 - 2²² = 149865442567 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (149869633871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74934818435 + 74934818436.

It is an arithmetic number, because the mean of its divisors is an integer number (74934818436).

Almost surely, 2^149869636871 is an apocalyptic number.

149869636871 is a deficient number, since it is larger than the sum of its proper divisors (1).

149869636871 is an equidigital number, since it uses as much as digits as its factorization.

149869636871 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 94058496, while the sum is 68.

The spelling of 149869636871 in words is "one hundred forty-nine billion, eight hundred sixty-nine million, six hundred thirty-six thousand, eight hundred seventy-one".