642463520354 has 8 divisors (see below), whose sum is σ = 973236818268. Its totient is φ = 318051247600.

The previous prime is 642463520353. The next prime is 642463520371. The reversal of 642463520354 is 453025364246.

It can be written as a sum of positive squares in 2 ways, for example, as 642358969729 + 104550625 = 801473^2 + 10225^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-3 number, since 3×642463520354³ (a number of 36 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (642463520353) 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, 1590256037 + ... + 1590256440.

Almost surely, 2^642463520354 is an apocalyptic number.

642463520354 is a deficient number, since it is larger than the sum of its proper divisors (330773297914).

642463520354 is a wasteful number, since it uses less digits than its factorization.

642463520354 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3180512580.

The product of its (nonzero) digits is 2073600, while the sum is 44.

The spelling of 642463520354 in words is "six hundred forty-two billion, four hundred sixty-three million, five hundred twenty thousand, three hundred fifty-four".