155339149247 has 2 divisors, whose sum is σ = 155339149248. Its totient is φ = 155339149246.

The previous prime is 155339149237. The next prime is 155339149249. The reversal of 155339149247 is 742941933551.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 155339149247 - 2⁶ = 155339149183 is a prime.

Together with 155339149249, 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 (155339149249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77669574623 + 77669574624.

It is an arithmetic number, because the mean of its divisors is an integer number (77669574624).

Almost surely, 2^155339149247 is an apocalyptic number.

155339149247 is a deficient number, since it is larger than the sum of its proper divisors (1).

155339149247 is an equidigital number, since it uses as much as digits as its factorization.

155339149247 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4082400, while the sum is 53.

The spelling of 155339149247 in words is "one hundred fifty-five billion, three hundred thirty-nine million, one hundred forty-nine thousand, two hundred forty-seven".