42643731457332 has 18 divisors (see below), whose sum is σ = 107793876739458. Its totient is φ = 14214577152432.

The previous prime is 42643731457331. The next prime is 42643731457343. The reversal of 42643731457332 is 23375413734624.

42643731457332 is a `hidden beast` number, since 4 + 2 + 6 + 4 + 3 + 7 + 31 + 4 + 573 + 32 = 666.

It can be written as a sum of positive squares in only one way, i.e., 40005043102116 + 2638688355216 = 6324954^2 + 1624404^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42643731457331) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 592274047983 + ... + 592274048054.

Almost surely, 2^{42643731457332} is an apocalyptic number.

It is an amenable number.

42643731457332 is an abundant number, since it is smaller than the sum of its proper divisors (65150145282126).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42643731457332 is a wasteful number, since it uses less digits than its factorization.

42643731457332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1184548096047 (or 1184548096042 counting only the distinct ones).

The product of its digits is 30481920, while the sum is 54.

The spelling of 42643731457332 in words is "forty-two trillion, six hundred forty-three billion, seven hundred thirty-one million, four hundred fifty-seven thousand, three hundred thirty-two".