155426121624601 has 4 divisors (see below), whose sum is σ = 155501243000100. Its totient is φ = 155351000249104.

The previous prime is 155426121624539. The next prime is 155426121624647. The reversal of 155426121624601 is 106426121624551.

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

It can be written as a sum of positive squares in 2 ways, for example, as 76472856255376 + 78953265369225 = 8744876^2 + 8885565^2 .

It is a cyclic number.

It is not a de Polignac number, because 155426121624601 - 2³⁹ = 154876365810713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (155426121624661) 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, 37560684646 + ... + 37560688783.

It is an arithmetic number, because the mean of its divisors is an integer number (38875310750025).

Almost surely, 2^{155426121624601} is an apocalyptic number.

It is an amenable number.

155426121624601 is a deficient number, since it is larger than the sum of its proper divisors (75121375499).

155426121624601 is an equidigital number, since it uses as much as digits as its factorization.

155426121624601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75121375498.

The product of its (nonzero) digits is 691200, while the sum is 46.

The spelling of 155426121624601 in words is "one hundred fifty-five trillion, four hundred twenty-six billion, one hundred twenty-one million, six hundred twenty-four thousand, six hundred one".