642505153463 has 8 divisors (see below), whose sum is σ = 648895122576. Its totient is φ = 636115744000.

The previous prime is 642505153417. The next prime is 642505153517. The reversal of 642505153463 is 364351505246.

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

It is a cyclic number.

It is not a de Polignac number, because 642505153463 - 2²² = 642500959159 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 (642505143463) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2394695 + ... + 2649447.

It is an arithmetic number, because the mean of its divisors is an integer number (81111890322).

Almost surely, 2^642505153463 is an apocalyptic number.

642505153463 is a deficient number, since it is larger than the sum of its proper divisors (6389969113).

642505153463 is a wasteful number, since it uses less digits than its factorization.

642505153463 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 279825.

The product of its (nonzero) digits is 1296000, while the sum is 44.

The spelling of 642505153463 in words is "six hundred forty-two billion, five hundred five million, one hundred fifty-three thousand, four hundred sixty-three".