642684001467 has 16 divisors (see below), whose sum is σ = 876931038720. Its totient is φ = 418448547552.

The previous prime is 642684001457. The next prime is 642684001481. The reversal of 642684001467 is 764100486246.

It is not a de Polignac number, because 642684001467 - 2⁴ = 642684001451 is a prime.

It is not an unprimeable number, because it can be changed into a prime (642684001457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1016053 + ... + 1522409.

It is an arithmetic number, because the mean of its divisors is an integer number (54808189920).

Almost surely, 2^642684001467 is an apocalyptic number.

642684001467 is a deficient number, since it is larger than the sum of its proper divisors (234247037253).

642684001467 is a wasteful number, since it uses less digits than its factorization.

642684001467 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 516242.

The product of its (nonzero) digits is 1548288, while the sum is 48.

The spelling of 642684001467 in words is "six hundred forty-two billion, six hundred eighty-four million, one thousand, four hundred sixty-seven".