12007371581 has 2 divisors, whose sum is σ = 12007371582. Its totient is φ = 12007371580.

The previous prime is 12007371547. The next prime is 12007371611. The reversal of 12007371581 is 18517370021.

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., 11542279225 + 465092356 = 107435^2 + 21566^2 .

It is a cyclic number.

It is not a de Polignac number, because 12007371581 - 2⁶ = 12007371517 is a prime.

It is a super-2 number, since 2×12007371581² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12007371521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6003685790 + 6003685791.

It is an arithmetic number, because the mean of its divisors is an integer number (6003685791).

Almost surely, 2^12007371581 is an apocalyptic number.

It is an amenable number.

12007371581 is a deficient number, since it is larger than the sum of its proper divisors (1).

12007371581 is an equidigital number, since it uses as much as digits as its factorization.

12007371581 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11760, while the sum is 35.

The spelling of 12007371581 in words is "twelve billion, seven million, three hundred seventy-one thousand, five hundred eighty-one".