155516606101 has 4 divisors (see below), whose sum is σ = 164664641772. Its totient is φ = 146368570432.

The previous prime is 155516606057. The next prime is 155516606123. The reversal of 155516606101 is 101606615551.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 49829847076 + 105686759025 = 223226^2 + 325095^2 .

It is a cyclic number.

It is not a de Polignac number, because 155516606101 - 2¹³ = 155516597909 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155516603101) 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, 4574017810 + ... + 4574017843.

It is an arithmetic number, because the mean of its divisors is an integer number (41166160443).

Almost surely, 2^155516606101 is an apocalyptic number.

It is an amenable number.

155516606101 is a deficient number, since it is larger than the sum of its proper divisors (9148035671).

155516606101 is an equidigital number, since it uses as much as digits as its factorization.

155516606101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9148035670.

The product of its (nonzero) digits is 27000, while the sum is 37.

The spelling of 155516606101 in words is "one hundred fifty-five billion, five hundred sixteen million, six hundred six thousand, one hundred one".