820271490967 has 2 divisors, whose sum is σ = 820271490968. Its totient is φ = 820271490966.

The previous prime is 820271490847. The next prime is 820271490979. The reversal of 820271490967 is 769094172028.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 820271490967 - 2²⁷ = 820137273239 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (820271494967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 410135745483 + 410135745484.

It is an arithmetic number, because the mean of its divisors is an integer number (410135745484).

Almost surely, 2^820271490967 is an apocalyptic number.

820271490967 is a deficient number, since it is larger than the sum of its proper divisors (1).

820271490967 is an equidigital number, since it uses as much as digits as its factorization.

820271490967 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3048192, while the sum is 55.

The spelling of 820271490967 in words is "eight hundred twenty billion, two hundred seventy-one million, four hundred ninety thousand, nine hundred sixty-seven".