155106065661 has 8 divisors (see below), whose sum is σ = 206923823904. Its totient is φ = 103346175600.

The previous prime is 155106065659. The next prime is 155106065669. The reversal of 155106065661 is 166560601551.

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

It is not a de Polignac number, because 155106065661 - 2¹ = 155106065659 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155106065669) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14460790 + ... + 14471511.

It is an arithmetic number, because the mean of its divisors is an integer number (25865477988).

Almost surely, 2^155106065661 is an apocalyptic number.

It is an amenable number.

155106065661 is a deficient number, since it is larger than the sum of its proper divisors (51817758243).

155106065661 is a wasteful number, since it uses less digits than its factorization.

155106065661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28934091.

The product of its (nonzero) digits is 162000, while the sum is 42.

The spelling of 155106065661 in words is "one hundred fifty-five billion, one hundred six million, sixty-five thousand, six hundred sixty-one".