155051406321157 has 2 divisors, whose sum is σ = 155051406321158. Its totient is φ = 155051406321156.

The previous prime is 155051406321137. The next prime is 155051406321209. The reversal of 155051406321157 is 751123604150551.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 146301458924196 + 8749947396961 = 12095514^2 + 2958031^2 .

It is a cyclic number.

It is not a de Polignac number, because 155051406321157 - 2¹¹ = 155051406319109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (155051406321127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77525703160578 + 77525703160579.

It is an arithmetic number, because the mean of its divisors is an integer number (77525703160579).

Almost surely, 2^{155051406321157} is an apocalyptic number.

It is an amenable number.

155051406321157 is a deficient number, since it is larger than the sum of its proper divisors (1).

155051406321157 is an equidigital number, since it uses as much as digits as its factorization.

155051406321157 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 630000, while the sum is 46.

The spelling of 155051406321157 in words is "one hundred fifty-five trillion, fifty-one billion, four hundred six million, three hundred twenty-one thousand, one hundred fifty-seven".