155665015042 has 8 divisors (see below), whose sum is σ = 233596595196. Its totient is φ = 77799483312.

The previous prime is 155665014991. The next prime is 155665015049. The reversal of 155665015042 is 240510566551.

It can be written as a sum of positive squares in 2 ways, for example, as 137032492041 + 18632523001 = 370179^2 + 136501^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 155665014986 and 155665015004.

It is not an unprimeable number, because it can be changed into a prime (155665015049) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16506213 + ... + 16515640.

Almost surely, 2^155665015042 is an apocalyptic number.

155665015042 is a deficient number, since it is larger than the sum of its proper divisors (77931580154).

155665015042 is a wasteful number, since it uses less digits than its factorization.

155665015042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33024212.

The product of its (nonzero) digits is 180000, while the sum is 40.

The spelling of 155665015042 in words is "one hundred fifty-five billion, six hundred sixty-five million, fifteen thousand, forty-two".