11615655001 has 2 divisors, whose sum is σ = 11615655002. Its totient is φ = 11615655000.

The previous prime is 11615654989. The next prime is 11615655049. The reversal of 11615655001 is 10055651611.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7757381776 + 3858273225 = 88076^2 + 62115^2 .

It is an emirp because it is prime and its reverse (10055651611) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11615655001 - 2¹⁹ = 11615130713 is a prime.

It is a super-2 number, since 2×11615655001² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11615655061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5807827500 + 5807827501.

It is an arithmetic number, because the mean of its divisors is an integer number (5807827501).

Almost surely, 2^11615655001 is an apocalyptic number.

It is an amenable number.

11615655001 is a deficient number, since it is larger than the sum of its proper divisors (1).

11615655001 is an equidigital number, since it uses as much as digits as its factorization.

11615655001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4500, while the sum is 31.

The spelling of 11615655001 in words is "eleven billion, six hundred fifteen million, six hundred fifty-five thousand, one".