155620450841 has 2 divisors, whose sum is σ = 155620450842. Its totient is φ = 155620450840.

The previous prime is 155620450837. The next prime is 155620450889. The reversal of 155620450841 is 148054026551.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 154559059600 + 1061391241 = 393140^2 + 32579^2 .

It is a cyclic number.

It is not a de Polignac number, because 155620450841 - 2² = 155620450837 is a prime.

It is not a weakly prime, because it can be changed into another prime (155620450801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77810225420 + 77810225421.

It is an arithmetic number, because the mean of its divisors is an integer number (77810225421).

Almost surely, 2^155620450841 is an apocalyptic number.

It is an amenable number.

155620450841 is a deficient number, since it is larger than the sum of its proper divisors (1).

155620450841 is an equidigital number, since it uses as much as digits as its factorization.

155620450841 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192000, while the sum is 41.

The spelling of 155620450841 in words is "one hundred fifty-five billion, six hundred twenty million, four hundred fifty thousand, eight hundred forty-one".