816914053667 has 2 divisors, whose sum is σ = 816914053668. Its totient is φ = 816914053666.

The previous prime is 816914053601. The next prime is 816914053673. The reversal of 816914053667 is 766350419618.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 816914053667 - 2¹² = 816914049571 is a prime.

It is a super-2 number, since 2×816914053667² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (816914052667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 408457026833 + 408457026834.

It is an arithmetic number, because the mean of its divisors is an integer number (408457026834).

Almost surely, 2^816914053667 is an apocalyptic number.

816914053667 is a deficient number, since it is larger than the sum of its proper divisors (1).

816914053667 is an equidigital number, since it uses as much as digits as its factorization.

816914053667 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6531840, while the sum is 56.

The spelling of 816914053667 in words is "eight hundred sixteen billion, nine hundred fourteen million, fifty-three thousand, six hundred sixty-seven".