155627552609 has 2 divisors, whose sum is σ = 155627552610. Its totient is φ = 155627552608.

The previous prime is 155627552573. The next prime is 155627552653. The reversal of 155627552609 is 906255726551.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 135733296400 + 19894256209 = 368420^2 + 141047^2 .

It is a cyclic number.

It is not a de Polignac number, because 155627552609 - 2²⁴ = 155610775393 is a prime.

It is not a weakly prime, because it can be changed into another prime (155627557609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77813776304 + 77813776305.

It is an arithmetic number, because the mean of its divisors is an integer number (77813776305).

Almost surely, 2^155627552609 is an apocalyptic number.

It is an amenable number.

155627552609 is a deficient number, since it is larger than the sum of its proper divisors (1).

155627552609 is an equidigital number, since it uses as much as digits as its factorization.

155627552609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5670000, while the sum is 53.

The spelling of 155627552609 in words is "one hundred fifty-five billion, six hundred twenty-seven million, five hundred fifty-two thousand, six hundred nine".