42643205544615 has 32 divisors (see below), whose sum is σ = 75269658131136. Its totient is φ = 20481539619840.

The previous prime is 42643205544557. The next prime is 42643205544617. The reversal of 42643205544615 is 51644550234624.

42643205544615 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 42643205544615 - 2⁶ = 42643205544551 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42643205544617) 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 31 ways as a sum of consecutive naturals, for example, 2666859144 + ... + 2666875133.

It is an arithmetic number, because the mean of its divisors is an integer number (2352176816598).

Almost surely, 2^{42643205544615} is an apocalyptic number.

42643205544615 is a deficient number, since it is larger than the sum of its proper divisors (32626452586521).

42643205544615 is a wasteful number, since it uses less digits than its factorization.

42643205544615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5333734339.

The product of its (nonzero) digits is 13824000, while the sum is 51.

The spelling of 42643205544615 in words is "forty-two trillion, six hundred forty-three billion, two hundred five million, five hundred forty-four thousand, six hundred fifteen".