262428621673 has 4 divisors (see below), whose sum is σ = 265750503040. Its totient is φ = 259106740308.

The previous prime is 262428621667. The next prime is 262428621683. The reversal of 262428621673 is 376126824262.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 262428621673 - 2¹³ = 262428613481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (262428621683) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1660940565 + ... + 1660940722.

It is an arithmetic number, because the mean of its divisors is an integer number (66437625760).

Almost surely, 2^262428621673 is an apocalyptic number.

It is an amenable number.

262428621673 is a deficient number, since it is larger than the sum of its proper divisors (3321881367).

262428621673 is an equidigital number, since it uses as much as digits as its factorization.

262428621673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3321881366.

The product of its digits is 2322432, while the sum is 49.

The spelling of 262428621673 in words is "two hundred sixty-two billion, four hundred twenty-eight million, six hundred twenty-one thousand, six hundred seventy-three".