267199348021 has 2 divisors, whose sum is σ = 267199348022. Its totient is φ = 267199348020.

The previous prime is 267199347997. The next prime is 267199348043. The reversal of 267199348021 is 120843991762.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 228951723121 + 38247624900 = 478489^2 + 195570^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-267199348021 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 267199348021.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (267199348081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 133599674010 + 133599674011.

It is an arithmetic number, because the mean of its divisors is an integer number (133599674011).

Almost surely, 2^267199348021 is an apocalyptic number.

It is an amenable number.

267199348021 is a deficient number, since it is larger than the sum of its proper divisors (1).

267199348021 is an equidigital number, since it uses as much as digits as its factorization.

267199348021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1306368, while the sum is 52.

The spelling of 267199348021 in words is "two hundred sixty-seven billion, one hundred ninety-nine million, three hundred forty-eight thousand, twenty-one".