149742136277 has 2 divisors, whose sum is σ = 149742136278. Its totient is φ = 149742136276.

The previous prime is 149742136267. The next prime is 149742136279. The reversal of 149742136277 is 772631247941.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 149479663876 + 262472401 = 386626^2 + 16201^2 .

It is a cyclic number.

It is not a de Polignac number, because 149742136277 - 2⁴ = 149742136261 is a prime.

Together with 149742136279, 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 (149742136279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74871068138 + 74871068139.

It is an arithmetic number, because the mean of its divisors is an integer number (74871068139).

Almost surely, 2^149742136277 is an apocalyptic number.

It is an amenable number.

149742136277 is a deficient number, since it is larger than the sum of its proper divisors (1).

149742136277 is an equidigital number, since it uses as much as digits as its factorization.

149742136277 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3556224, while the sum is 53.

The spelling of 149742136277 in words is "one hundred forty-nine billion, seven hundred forty-two million, one hundred thirty-six thousand, two hundred seventy-seven".