262009921091 has 2 divisors, whose sum is σ = 262009921092. Its totient is φ = 262009921090.

The previous prime is 262009921081. The next prime is 262009921099. The reversal of 262009921091 is 190129900262.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 262009921091 - 2¹⁴ = 262009904707 is a prime.

It is a super-2 number, since 2×262009921091² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (262009921099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 131004960545 + 131004960546.

It is an arithmetic number, because the mean of its divisors is an integer number (131004960546).

Almost surely, 2^262009921091 is an apocalyptic number.

262009921091 is a deficient number, since it is larger than the sum of its proper divisors (1).

262009921091 is an equidigital number, since it uses as much as digits as its factorization.

262009921091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34992, while the sum is 41.

The spelling of 262009921091 in words is "two hundred sixty-two billion, nine million, nine hundred twenty-one thousand, ninety-one".