11782971019 has 2 divisors, whose sum is σ = 11782971020. Its totient is φ = 11782971018.

The previous prime is 11782970981. The next prime is 11782971029. The reversal of 11782971019 is 91017928711.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11782971019 - 2²³ = 11774582411 is a prime.

It is a super-2 number, since 2×11782971019² (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 11782971019.

It is not a weakly prime, because it can be changed into another prime (11782971029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5891485509 + 5891485510.

It is an arithmetic number, because the mean of its divisors is an integer number (5891485510).

Almost surely, 2^11782971019 is an apocalyptic number.

11782971019 is a deficient number, since it is larger than the sum of its proper divisors (1).

11782971019 is an equidigital number, since it uses as much as digits as its factorization.

11782971019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 63504, while the sum is 46.

The spelling of 11782971019 in words is "eleven billion, seven hundred eighty-two million, nine hundred seventy-one thousand, nineteen".