155355626434 has 4 divisors (see below), whose sum is σ = 233033439654. Its totient is φ = 77677813216.

The previous prime is 155355626417. The next prime is 155355626453. The reversal of 155355626434 is 434626553551.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 434626553551 = 10567 ⋅41130553.

It can be written as a sum of positive squares in only one way, i.e., 84916874025 + 70438752409 = 291405^2 + 265403^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38838906607 + ... + 38838906610.

Almost surely, 2^155355626434 is an apocalyptic number.

155355626434 is a deficient number, since it is larger than the sum of its proper divisors (77677813220).

155355626434 is an equidigital number, since it uses as much as digits as its factorization.

155355626434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77677813219.

The product of its digits is 6480000, while the sum is 49.

The spelling of 155355626434 in words is "one hundred fifty-five billion, three hundred fifty-five million, six hundred twenty-six thousand, four hundred thirty-four".