42643503734 has 16 divisors (see below), whose sum is σ = 71261028720. Its totient is φ = 19002940320.

The previous prime is 42643503731. The next prime is 42643503743. The reversal of 42643503734 is 43730534624.

It is a junction number, because it is equal to n+sod(n) for n = 42643503691 and 42643503700.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42643503731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28277432 + ... + 28278939.

It is an arithmetic number, because the mean of its divisors is an integer number (4453814295).

Almost surely, 2^42643503734 is an apocalyptic number.

42643503734 is a deficient number, since it is larger than the sum of its proper divisors (28617524986).

42643503734 is a wasteful number, since it uses less digits than its factorization.

42643503734 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56556415.

The product of its (nonzero) digits is 725760, while the sum is 41.

The spelling of 42643503734 in words is "forty-two billion, six hundred forty-three million, five hundred three thousand, seven hundred thirty-four".