642005548327 has 32 divisors (see below), whose sum is σ = 773040280320. Its totient is φ = 525360971520.

The previous prime is 642005548313. The next prime is 642005548339. The reversal of 642005548327 is 723845500246.

It is a de Polignac number, because none of the positive numbers 2^k-642005548327 is a prime.

It is a super-2 number, since 2×642005548327² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (642005548427) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3709324 + ... + 3878542.

It is an arithmetic number, because the mean of its divisors is an integer number (24157508760).

Almost surely, 2^642005548327 is an apocalyptic number.

642005548327 is a deficient number, since it is larger than the sum of its proper divisors (131034731993).

642005548327 is a wasteful number, since it uses less digits than its factorization.

642005548327 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169903.

The product of its (nonzero) digits is 1612800, while the sum is 46.

The spelling of 642005548327 in words is "six hundred forty-two billion, five million, five hundred forty-eight thousand, three hundred twenty-seven".