60643315405 has 4 divisors (see below), whose sum is σ = 72771978492. Its totient is φ = 48514652320.

The previous prime is 60643315391. The next prime is 60643315409. The reversal of 60643315405 is 50451334606.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 18451690569 + 42191624836 = 135837^2 + 205406^2 .

It is not a de Polignac number, because 60643315405 - 2¹⁷ = 60643184333 is a prime.

It is a super-2 number, since 2×60643315405² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (60643315409) 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, 6064331536 + ... + 6064331545.

It is an arithmetic number, because the mean of its divisors is an integer number (18192994623).

Almost surely, 2^60643315405 is an apocalyptic number.

It is an amenable number.

60643315405 is a deficient number, since it is larger than the sum of its proper divisors (12128663087).

60643315405 is a wasteful number, since it uses less digits than its factorization.

60643315405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12128663086.

The product of its (nonzero) digits is 129600, while the sum is 37.

The spelling of 60643315405 in words is "sixty billion, six hundred forty-three million, three hundred fifteen thousand, four hundred five".