12087475778731 has 2 divisors, whose sum is σ = 12087475778732. Its totient is φ = 12087475778730.

The previous prime is 12087475778689. The next prime is 12087475778761. The reversal of 12087475778731 is 13787757478021.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12087475778731 - 2¹⁵ = 12087475745963 is a prime.

It is a super-2 number, since 2×12087475778731² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12087475778761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6043737889365 + 6043737889366.

It is an arithmetic number, because the mean of its divisors is an integer number (6043737889366).

Almost surely, 2^{12087475778731} is an apocalyptic number.

12087475778731 is a deficient number, since it is larger than the sum of its proper divisors (1).

12087475778731 is an equidigital number, since it uses as much as digits as its factorization.

12087475778731 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 129077760, while the sum is 67.

The spelling of 12087475778731 in words is "twelve trillion, eighty-seven billion, four hundred seventy-five million, seven hundred seventy-eight thousand, seven hundred thirty-one".