155599274879073 has 6 divisors (see below), whose sum is σ = 224754508158674. Its totient is φ = 103732849919376.

The previous prime is 155599274879021. The next prime is 155599274879149. The reversal of 155599274879073 is 370978472995551.

155599274879073 is a `hidden beast` number, since 15 + 5 + 59 + 9 + 2 + 7 + 487 + 9 + 0 + 73 = 666.

It can be written as a sum of positive squares in only one way, i.e., 150481938683664 + 5117336195409 = 12267108^2 + 2262153^2 .

It is not a de Polignac number, because 155599274879073 - 2²⁴ = 155599258101857 is a prime.

It is a super-2 number, since 2×155599274879073² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 155599274878983 and 155599274879001.

It is not an unprimeable number, because it can be changed into a prime (155599274879173) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8644404159940 + ... + 8644404159957.

Almost surely, 2^{155599274879073} is an apocalyptic number.

It is an amenable number.

155599274879073 is a deficient number, since it is larger than the sum of its proper divisors (69155233279601).

155599274879073 is a wasteful number, since it uses less digits than its factorization.

155599274879073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17288808319903 (or 17288808319900 counting only the distinct ones).

The product of its (nonzero) digits is 6001128000, while the sum is 81.

The spelling of 155599274879073 in words is "one hundred fifty-five trillion, five hundred ninety-nine billion, two hundred seventy-four million, eight hundred seventy-nine thousand, seventy-three".