262921745897 has 2 divisors, whose sum is σ = 262921745898. Its totient is φ = 262921745896.

The previous prime is 262921745861. The next prime is 262921745959. The reversal of 262921745897 is 798547129262.

It is an a-pointer prime, because the next prime (262921745959) can be obtained adding 262921745897 to its sum of digits (62).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 247271485696 + 15650260201 = 497264^2 + 125101^2 .

It is a cyclic number.

It is not a de Polignac number, because 262921745897 - 2⁸ = 262921745641 is a prime.

It is not a weakly prime, because it can be changed into another prime (262921715897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 131460872948 + 131460872949.

It is an arithmetic number, because the mean of its divisors is an integer number (131460872949).

Almost surely, 2^262921745897 is an apocalyptic number.

It is an amenable number.

262921745897 is a deficient number, since it is larger than the sum of its proper divisors (1).

262921745897 is an equidigital number, since it uses as much as digits as its factorization.

262921745897 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 30481920, while the sum is 62.

The spelling of 262921745897 in words is "two hundred sixty-two billion, nine hundred twenty-one million, seven hundred forty-five thousand, eight hundred ninety-seven".