155232321379 has 2 divisors, whose sum is σ = 155232321380. Its totient is φ = 155232321378.

The previous prime is 155232321317. The next prime is 155232321407. The reversal of 155232321379 is 973123232551.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 155232321379 - 2²³ = 155223932771 is a prime.

It is not a weakly prime, because it can be changed into another prime (155232327379) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77616160689 + 77616160690.

It is an arithmetic number, because the mean of its divisors is an integer number (77616160690).

Almost surely, 2^155232321379 is an apocalyptic number.

155232321379 is a deficient number, since it is larger than the sum of its proper divisors (1).

155232321379 is an equidigital number, since it uses as much as digits as its factorization.

155232321379 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 340200, while the sum is 43.

The spelling of 155232321379 in words is "one hundred fifty-five billion, two hundred thirty-two million, three hundred twenty-one thousand, three hundred seventy-nine".