155065600505983 has 4 divisors (see below), whose sum is σ = 155078765098840. Its totient is φ = 155052435913128.

The previous prime is 155065600505899. The next prime is 155065600505993. The reversal of 155065600505983 is 389505006560551.

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

It is a cyclic number.

It is not a de Polignac number, because 155065600505983 - 2¹³ = 155065600497791 is a prime.

It is a super-2 number, since 2×155065600505983² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155065600505993) 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, 6582278760 + ... + 6582302317.

It is an arithmetic number, because the mean of its divisors is an integer number (38769691274710).

Almost surely, 2^{155065600505983} is an apocalyptic number.

155065600505983 is a deficient number, since it is larger than the sum of its proper divisors (13164592857).

155065600505983 is a wasteful number, since it uses less digits than its factorization.

155065600505983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13164592856.

The product of its (nonzero) digits is 24300000, while the sum is 58.

The spelling of 155065600505983 in words is "one hundred fifty-five trillion, sixty-five billion, six hundred million, five hundred five thousand, nine hundred eighty-three".