11473106581 has 2 divisors, whose sum is σ = 11473106582. Its totient is φ = 11473106580.

The previous prime is 11473106573. The next prime is 11473106587. The reversal of 11473106581 is 18560137411.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11275254225 + 197852356 = 106185^2 + 14066^2 .

It is a cyclic number.

It is not a de Polignac number, because 11473106581 - 2³ = 11473106573 is a prime.

It is a super-2 number, since 2×11473106581² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11473106581.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11473106587) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5736553290 + 5736553291.

It is an arithmetic number, because the mean of its divisors is an integer number (5736553291).

Almost surely, 2^11473106581 is an apocalyptic number.

It is an amenable number.

11473106581 is a deficient number, since it is larger than the sum of its proper divisors (1).

11473106581 is an equidigital number, since it uses as much as digits as its factorization.

11473106581 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20160, while the sum is 37.

The spelling of 11473106581 in words is "eleven billion, four hundred seventy-three million, one hundred six thousand, five hundred eighty-one".