155454304505 has 16 divisors (see below), whose sum is σ = 190280908944. Its totient is φ = 121878282240.

The previous prime is 155454304483. The next prime is 155454304507. The reversal of 155454304505 is 505403454551.

It can be written as a sum of positive squares in 8 ways, for example, as 10143914089 + 145310390416 = 100717^2 + 381196^2 .

It is a de Polignac number, because none of the positive numbers 2^k-155454304505 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (155454304507) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 99464 + ... + 566393.

It is an arithmetic number, because the mean of its divisors is an integer number (11892556809).

Almost surely, 2^155454304505 is an apocalyptic number.

It is an amenable number.

155454304505 is a deficient number, since it is larger than the sum of its proper divisors (34826604439).

155454304505 is an equidigital number, since it uses as much as digits as its factorization.

155454304505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 666796.

The product of its (nonzero) digits is 600000, while the sum is 41.

The spelling of 155454304505 in words is "one hundred fifty-five billion, four hundred fifty-four million, three hundred four thousand, five hundred five".