155243005504516 has 24 divisors (see below), whose sum is σ = 271745182048536. Its totient is φ = 77601525895680.

The previous prime is 155243005504513. The next prime is 155243005504529. The reversal of 155243005504516 is 615405500342551.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 23878077710400 + 131364927794116 = 4886520^2 + 11461454^2 .

It is not an unprimeable number, because it can be changed into a prime (155243005504511) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 802022706 + ... + 802216246.

It is an arithmetic number, because the mean of its divisors is an integer number (11322715918689).

Almost surely, 2^{155243005504516} is an apocalyptic number.

It is an amenable number.

155243005504516 is a deficient number, since it is larger than the sum of its proper divisors (116502176544020).

155243005504516 is a wasteful number, since it uses less digits than its factorization.

155243005504516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244119 (or 244117 counting only the distinct ones).

The product of its (nonzero) digits is 1800000, while the sum is 46.

The spelling of 155243005504516 in words is "one hundred fifty-five trillion, two hundred forty-three billion, five million, five hundred four thousand, five hundred sixteen".