155620168900067 has 4 divisors (see below), whose sum is σ = 155620227638136. Its totient is φ = 155620110162000.

The previous prime is 155620168899917. The next prime is 155620168900109. The reversal of 155620168900067 is 760009861026551.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 155620168900067 - 2⁴⁰ = 154520657272291 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 155620168899985 and 155620168900021.

It is not an unprimeable number, because it can be changed into a prime (155620168900267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25197434 + ... + 30759567.

It is an arithmetic number, because the mean of its divisors is an integer number (38905056909534).

Almost surely, 2^{155620168900067} is an apocalyptic number.

155620168900067 is a deficient number, since it is larger than the sum of its proper divisors (58738069).

155620168900067 is an equidigital number, since it uses as much as digits as its factorization.

155620168900067 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58738068.

The product of its (nonzero) digits is 5443200, while the sum is 56.

The spelling of 155620168900067 in words is "one hundred fifty-five trillion, six hundred twenty billion, one hundred sixty-eight million, nine hundred thousand, sixty-seven".