11651846819 has 2 divisors, whose sum is σ = 11651846820. Its totient is φ = 11651846818.

The previous prime is 11651846797. The next prime is 11651846827. The reversal of 11651846819 is 91864815611.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11651846819 - 2²⁸ = 11383411363 is a prime.

It is a super-2 number, since 2×11651846819² (a number of 21 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (11651846839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5825923409 + 5825923410.

It is an arithmetic number, because the mean of its divisors is an integer number (5825923410).

Almost surely, 2^11651846819 is an apocalyptic number.

11651846819 is a deficient number, since it is larger than the sum of its proper divisors (1).

11651846819 is an equidigital number, since it uses as much as digits as its factorization.

11651846819 is an evil number, because the sum of its binary digits is even.

The product of its digits is 414720, while the sum is 50.

The spelling of 11651846819 in words is "eleven billion, six hundred fifty-one million, eight hundred forty-six thousand, eight hundred nineteen".