11655555015623 has 2 divisors, whose sum is σ = 11655555015624. Its totient is φ = 11655555015622.

The previous prime is 11655555015571. The next prime is 11655555015653. The reversal of 11655555015623 is 32651055555611.

It is a strong prime.

It is an emirp because it is prime and its reverse (32651055555611) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11655555015623 - 2¹⁴ = 11655554999239 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11655555015653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5827777507811 + 5827777507812.

It is an arithmetic number, because the mean of its divisors is an integer number (5827777507812).

Almost surely, 2^{11655555015623} is an apocalyptic number.

11655555015623 is a deficient number, since it is larger than the sum of its proper divisors (1).

11655555015623 is an equidigital number, since it uses as much as digits as its factorization.

11655555015623 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3375000, while the sum is 50.

The spelling of 11655555015623 in words is "eleven trillion, six hundred fifty-five billion, five hundred fifty-five million, fifteen thousand, six hundred twenty-three".