155512055015122 has 32 divisors (see below), whose sum is σ = 265990386038832. Its totient is φ = 67552381845504.

The previous prime is 155512055015113. The next prime is 155512055015167. The reversal of 155512055015122 is 221510550215551.

It can be written as a sum of positive squares in 8 ways, for example, as 1812337905361 + 153699717109761 = 1346231^2 + 12397569^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 90660658 + ... + 92360050.

Almost surely, 2^{155512055015122} is an apocalyptic number.

155512055015122 is a deficient number, since it is larger than the sum of its proper divisors (110478331023710).

155512055015122 is a wasteful number, since it uses less digits than its factorization.

155512055015122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1906462.

The product of its (nonzero) digits is 125000, while the sum is 40.

The spelling of 155512055015122 in words is "one hundred fifty-five trillion, five hundred twelve billion, fifty-five million, fifteen thousand, one hundred twenty-two".