68452841641 has 4 divisors (see below), whose sum is σ = 72055622800. Its totient is φ = 64850060484.

The previous prime is 68452841629. The next prime is 68452841651. The reversal of 68452841641 is 14614825486.

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 68452841641 - 2⁹ = 68452841129 is a prime.

It is not an unprimeable number, because it can be changed into a prime (68452841651) 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, 1801390551 + ... + 1801390588.

It is an arithmetic number, because the mean of its divisors is an integer number (18013905700).

Almost surely, 2^68452841641 is an apocalyptic number.

It is an amenable number.

68452841641 is a deficient number, since it is larger than the sum of its proper divisors (3602781159).

68452841641 is a wasteful number, since it uses less digits than its factorization.

68452841641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3602781158.

The product of its digits is 1474560, while the sum is 49.

The spelling of 68452841641 in words is "sixty-eight billion, four hundred fifty-two million, eight hundred forty-one thousand, six hundred forty-one".