155151561619 has 2 divisors, whose sum is σ = 155151561620. Its totient is φ = 155151561618.

The previous prime is 155151561601. The next prime is 155151561629. The reversal of 155151561619 is 916165151551.

155151561619 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 155151561619 - 2¹¹ = 155151559571 is a prime.

It is a super-2 number, since 2×155151561619² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (155151561629) 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, 77575780809 + 77575780810.

It is an arithmetic number, because the mean of its divisors is an integer number (77575780810).

Almost surely, 2^155151561619 is an apocalyptic number.

155151561619 is a deficient number, since it is larger than the sum of its proper divisors (1).

155151561619 is an equidigital number, since it uses as much as digits as its factorization.

155151561619 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 202500, while the sum is 46.

The spelling of 155151561619 in words is "one hundred fifty-five billion, one hundred fifty-one million, five hundred sixty-one thousand, six hundred nineteen".