42707645520 has 160 divisors (see below), whose sum is σ = 134384648832. Its totient is φ = 11217862656.

The previous prime is 42707645507. The next prime is 42707645573. The reversal of 42707645520 is 2554670724.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21320839 + ... + 21322841.

Almost surely, 2^42707645520 is an apocalyptic number.

42707645520 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42707645520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67192324416).

42707645520 is an abundant number, since it is smaller than the sum of its proper divisors (91677003312).

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

42707645520 is a wasteful number, since it uses less digits than its factorization.

42707645520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3309 (or 3303 counting only the distinct ones).

The product of its (nonzero) digits is 470400, while the sum is 42.

The spelling of 42707645520 in words is "forty-two billion, seven hundred seven million, six hundred forty-five thousand, five hundred twenty".