155623361506 has 8 divisors (see below), whose sum is σ = 238863764304. Its totient is φ = 76002106740.

The previous prime is 155623361479. The next prime is 155623361521. The reversal of 155623361506 is 605163326551.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 904786900 + ... + 904787071.

It is an arithmetic number, because the mean of its divisors is an integer number (29857970538).

Almost surely, 2^155623361506 is an apocalyptic number.

155623361506 is a deficient number, since it is larger than the sum of its proper divisors (83240402798).

155623361506 is a wasteful number, since it uses less digits than its factorization.

155623361506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1809574016.

The product of its (nonzero) digits is 486000, while the sum is 43.

The spelling of 155623361506 in words is "one hundred fifty-five billion, six hundred twenty-three million, three hundred sixty-one thousand, five hundred six".