155136361623 has 32 divisors (see below), whose sum is σ = 219468191232. Its totient is φ = 97266787200.

The previous prime is 155136361571. The next prime is 155136361649. The reversal of 155136361623 is 326163631551.

It is a happy number.

It is not a de Polignac number, because 155136361623 - 2¹⁸ = 155136099479 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155136361123) 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 in 31 ways as a sum of consecutive naturals, for example, 13383036 + ... + 13394622.

It is an arithmetic number, because the mean of its divisors is an integer number (6858380976).

Almost surely, 2^155136361623 is an apocalyptic number.

155136361623 is a deficient number, since it is larger than the sum of its proper divisors (64331829609).

155136361623 is a wasteful number, since it uses less digits than its factorization.

155136361623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14855.

The product of its digits is 291600, while the sum is 42.

The spelling of 155136361623 in words is "one hundred fifty-five billion, one hundred thirty-six million, three hundred sixty-one thousand, six hundred twenty-three".