94568137621 has 4 divisors (see below), whose sum is σ = 94568822892. Its totient is φ = 94567452352.

The previous prime is 94568137597. The next prime is 94568137639. The reversal of 94568137621 is 12673186549.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 75466133521 + 19102004100 = 274711^2 + 138210^2 .

It is a cyclic number.

It is not a de Polignac number, because 94568137621 - 2¹¹ = 94568135573 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 (94568137661) 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, 55330 + ... + 438403.

It is an arithmetic number, because the mean of its divisors is an integer number (23642205723).

Almost surely, 2^94568137621 is an apocalyptic number.

It is an amenable number.

94568137621 is a deficient number, since it is larger than the sum of its proper divisors (685271).

94568137621 is a wasteful number, since it uses less digits than its factorization.

94568137621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 685270.

The product of its digits is 2177280, while the sum is 52.

The spelling of 94568137621 in words is "ninety-four billion, five hundred sixty-eight million, one hundred thirty-seven thousand, six hundred twenty-one".