155669957453 has 2 divisors, whose sum is σ = 155669957454. Its totient is φ = 155669957452.

The previous prime is 155669957413. The next prime is 155669957473. The reversal of 155669957453 is 354759966551.

It is a happy number.

155669957453 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 111553996009 + 44115961444 = 333997^2 + 210038^2 .

It is a cyclic number.

It is not a de Polignac number, because 155669957453 - 2²⁰ = 155668908877 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 155669957453.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (155669957413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77834978726 + 77834978727.

It is an arithmetic number, because the mean of its divisors is an integer number (77834978727).

Almost surely, 2^155669957453 is an apocalyptic number.

It is an amenable number.

155669957453 is a deficient number, since it is larger than the sum of its proper divisors (1).

155669957453 is an equidigital number, since it uses as much as digits as its factorization.

155669957453 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 153090000, while the sum is 65.

The spelling of 155669957453 in words is "one hundred fifty-five billion, six hundred sixty-nine million, nine hundred fifty-seven thousand, four hundred fifty-three".