155146161641551 has 4 divisors (see below), whose sum is σ = 155298414990600. Its totient is φ = 154993908292504.

The previous prime is 155146161641509. The next prime is 155146161641663.

155146161641551 is nontrivially palindromic in base 10.

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 155146161641551 - 2¹¹ = 155146161639503 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155146161648551) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 76126672996 + ... + 76126675033.

It is an arithmetic number, because the mean of its divisors is an integer number (38824603747650).

Almost surely, 2^{155146161641551} is an apocalyptic number.

155146161641551 is a deficient number, since it is larger than the sum of its proper divisors (152253349049).

155146161641551 is a wasteful number, since it uses less digits than its factorization.

155146161641551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152253349048.

The product of its digits is 2160000, while the sum is 52.

The spelling of 155146161641551 in words is "one hundred fifty-five trillion, one hundred forty-six billion, one hundred sixty-one million, six hundred forty-one thousand, five hundred fifty-one".