155191378007 has 2 divisors, whose sum is σ = 155191378008. Its totient is φ = 155191378006.

The previous prime is 155191377977. The next prime is 155191378009. The reversal of 155191378007 is 700873191551.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 155191378007 - 2¹⁴ = 155191361623 is a prime.

Together with 155191378009, 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 (155191378009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77595689003 + 77595689004.

It is an arithmetic number, because the mean of its divisors is an integer number (77595689004).

Almost surely, 2^155191378007 is an apocalyptic number.

155191378007 is a deficient number, since it is larger than the sum of its proper divisors (1).

155191378007 is an equidigital number, since it uses as much as digits as its factorization.

155191378007 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 264600, while the sum is 47.

The spelling of 155191378007 in words is "one hundred fifty-five billion, one hundred ninety-one million, three hundred seventy-eight thousand, seven".