642182034681445 has 64 divisors (see below), whose sum is σ = 801338033664000. Its totient is φ = 493675986585600.

The previous prime is 642182034681353. The next prime is 642182034681449. The reversal of 642182034681445 is 544186430281246.

It is a de Polignac number, because none of the positive numbers 2^k-642182034681445 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 642182034681445.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (642182034681449) 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 63 ways as a sum of consecutive naturals, for example, 19627173796 + ... + 19627206514.

It is an arithmetic number, because the mean of its divisors is an integer number (12520906776000).

Almost surely, 2^{642182034681445} is an apocalyptic number.

It is an amenable number.

642182034681445 is a deficient number, since it is larger than the sum of its proper divisors (159155998982555).

642182034681445 is a wasteful number, since it uses less digits than its factorization.

642182034681445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35734.

The product of its (nonzero) digits is 35389440, while the sum is 58.

The spelling of 642182034681445 in words is "six hundred forty-two trillion, one hundred eighty-two billion, thirty-four million, six hundred eighty-one thousand, four hundred forty-five".