681648468301 has 4 divisors (see below), whose sum is σ = 681717758400. Its totient is φ = 681579178204.

The previous prime is 681648468269. The next prime is 681648468307. The reversal of 681648468301 is 103864846186.

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, and also an emirpimes, since its reverse is a distinct semiprime: 103864846186 = 2 ⋅51932423093.

It is a cyclic number.

It is not a de Polignac number, because 681648468301 - 2⁵ = 681648468269 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (681648468307) 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, 34630291 + ... + 34649968.

It is an arithmetic number, because the mean of its divisors is an integer number (170429439600).

Almost surely, 2^681648468301 is an apocalyptic number.

It is an amenable number.

681648468301 is a deficient number, since it is larger than the sum of its proper divisors (69290099).

681648468301 is an equidigital number, since it uses as much as digits as its factorization.

681648468301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69290098.

The product of its (nonzero) digits is 5308416, while the sum is 55.

The spelling of 681648468301 in words is "six hundred eighty-one billion, six hundred forty-eight million, four hundred sixty-eight thousand, three hundred one".