155573234742767 has 4 divisors (see below), whose sum is σ = 156949989032640. Its totient is φ = 154196480452896.

The previous prime is 155573234742743. The next prime is 155573234742769. The reversal of 155573234742767 is 767247432375551.

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 155573234742767 - 2¹⁴ = 155573234726383 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 155573234742697 and 155573234742706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155573234742769) 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, 688377144767 + ... + 688377144992.

It is an arithmetic number, because the mean of its divisors is an integer number (39237497258160).

Almost surely, 2^{155573234742767} is an apocalyptic number.

155573234742767 is a deficient number, since it is larger than the sum of its proper divisors (1376754289873).

155573234742767 is a wasteful number, since it uses less digits than its factorization.

155573234742767 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1376754289872.

The product of its digits is 1037232000, while the sum is 68.

The spelling of 155573234742767 in words is "one hundred fifty-five trillion, five hundred seventy-three billion, two hundred thirty-four million, seven hundred forty-two thousand, seven hundred sixty-seven".