5111105661655 has 32 divisors (see below), whose sum is σ = 7511260667904. Its totient is φ = 3258853771776.

The previous prime is 5111105661631. The next prime is 5111105661661. The reversal of 5111105661655 is 5561665011115.

It is a cyclic number.

It is not a de Polignac number, because 5111105661655 - 2³³ = 5102515727063 is a prime.

It is a super-2 number, since 2×5111105661655² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 51698167 + ... + 51796936.

It is an arithmetic number, because the mean of its divisors is an integer number (234726895872).

Almost surely, 2^{5111105661655} is an apocalyptic number.

5111105661655 is a deficient number, since it is larger than the sum of its proper divisors (2400155006249).

5111105661655 is a wasteful number, since it uses less digits than its factorization.

5111105661655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103495215.

The product of its (nonzero) digits is 135000, while the sum is 43.

The spelling of 5111105661655 in words is "five trillion, one hundred eleven billion, one hundred five million, six hundred sixty-one thousand, six hundred fifty-five".