155661616322 has 64 divisors (see below), whose sum is σ = 258553451520. Its totient is φ = 69963264000.

The previous prime is 155661616321. The next prime is 155661616351. The reversal of 155661616322 is 223616166551.

It is not an unprimeable number, because it can be changed into a prime (155661616321) 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, 35872829 + ... + 35877167.

It is an arithmetic number, because the mean of its divisors is an integer number (4039897680).

Almost surely, 2^155661616322 is an apocalyptic number.

155661616322 is a deficient number, since it is larger than the sum of its proper divisors (102891835198).

155661616322 is a wasteful number, since it uses less digits than its factorization.

155661616322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4827.

The product of its digits is 388800, while the sum is 44.

The spelling of 155661616322 in words is "one hundred fifty-five billion, six hundred sixty-one million, six hundred sixteen thousand, three hundred twenty-two".