11506507109969 has 2 divisors, whose sum is σ = 11506507109970. Its totient is φ = 11506507109968.

The previous prime is 11506507109899. The next prime is 11506507110023. The reversal of 11506507109969 is 96990170560511.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10020156004369 + 1486351105600 = 3165463^2 + 1219160^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11506507109969 is a prime.

It is a super-2 number, since 2×11506507109969² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11506507109269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5753253554984 + 5753253554985.

It is an arithmetic number, because the mean of its divisors is an integer number (5753253554985).

Almost surely, 2^{11506507109969} is an apocalyptic number.

It is an amenable number.

11506507109969 is a deficient number, since it is larger than the sum of its proper divisors (1).

11506507109969 is an equidigital number, since it uses as much as digits as its factorization.

11506507109969 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4592700, while the sum is 59.

The spelling of 11506507109969 in words is "eleven trillion, five hundred six billion, five hundred seven million, one hundred nine thousand, nine hundred sixty-nine".