42518557620 has 288 divisors, whose sum is σ = 167789905920. Its totient is φ = 8450830080.

The previous prime is 42518557607. The next prime is 42518557663. The reversal of 42518557620 is 2675581524.

42518557620 is a `hidden beast` number, since 4 + 2 + 5 + 18 + 5 + 5 + 7 + 620 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 252091 + ... + 385469.

It is an arithmetic number, because the mean of its divisors is an integer number (582603840).

Almost surely, 2^42518557620 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42518557620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83894952960).

42518557620 is an abundant number, since it is smaller than the sum of its proper divisors (125271348300).

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

42518557620 is a wasteful number, since it uses less digits than its factorization.

42518557620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133435 (or 133430 counting only the distinct ones).

The product of its (nonzero) digits is 672000, while the sum is 45.

The spelling of 42518557620 in words is "forty-two billion, five hundred eighteen million, five hundred fifty-seven thousand, six hundred twenty".