267906640069 has 2 divisors, whose sum is σ = 267906640070. Its totient is φ = 267906640068.

The previous prime is 267906640061. The next prime is 267906640129. The reversal of 267906640069 is 960046609762.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 208401380100 + 59505259969 = 456510^2 + 243937^2 .

It is a cyclic number.

It is not a de Polignac number, because 267906640069 - 2³ = 267906640061 is a prime.

It is a super-2 number, since 2×267906640069² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (267906640061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 133953320034 + 133953320035.

It is an arithmetic number, because the mean of its divisors is an integer number (133953320035).

Almost surely, 2^267906640069 is an apocalyptic number.

It is an amenable number.

267906640069 is a deficient number, since it is larger than the sum of its proper divisors (1).

267906640069 is an equidigital number, since it uses as much as digits as its factorization.

267906640069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5878656, while the sum is 55.

The spelling of 267906640069 in words is "two hundred sixty-seven billion, nine hundred six million, six hundred forty thousand, sixty-nine".