1555005011105 has 48 divisors (see below), whose sum is σ = 2391997696704. Its totient is φ = 961376895360.

The previous prime is 1555005011069. The next prime is 1555005011177. The reversal of 1555005011105 is 5011105005551.

It is a happy number.

It is not a de Polignac number, because 1555005011105 - 2⁸ = 1555005010849 is a prime.

It is a super-2 number, since 2×1555005011105² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5540111 + ... + 5814020.

It is an arithmetic number, because the mean of its divisors is an integer number (49833285348).

Almost surely, 2^{1555005011105} is an apocalyptic number.

It is an amenable number.

1555005011105 is a deficient number, since it is larger than the sum of its proper divisors (836992685599).

1555005011105 is a wasteful number, since it uses less digits than its factorization.

1555005011105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11354206 (or 11354199 counting only the distinct ones).

The product of its (nonzero) digits is 3125, while the sum is 29.

The spelling of 1555005011105 in words is "one trillion, five hundred fifty-five billion, five million, eleven thousand, one hundred five".