155111425115545 has 8 divisors (see below), whose sum is σ = 197082751911624. Its totient is φ = 116789778910464.

The previous prime is 155111425115539. The next prime is 155111425115599. The reversal of 155111425115545 is 545511524111551.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 28509502046041 + 126601923069504 = 5339429^2 + 11251752^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 155111425115545 - 2⁵ = 155111425115513 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 155111425115495 and 155111425115504.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 912420147654 + ... + 912420147823.

It is an arithmetic number, because the mean of its divisors is an integer number (24635343988953).

Almost surely, 2^{155111425115545} is an apocalyptic number.

It is an amenable number.

155111425115545 is a deficient number, since it is larger than the sum of its proper divisors (41971326796079).

155111425115545 is a wasteful number, since it uses less digits than its factorization.

155111425115545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1824840295499.

The product of its digits is 500000, while the sum is 46.

The spelling of 155111425115545 in words is "one hundred fifty-five trillion, one hundred eleven billion, four hundred twenty-five million, one hundred fifteen thousand, five hundred forty-five".