42649381506 has 32 divisors (see below), whose sum is σ = 85902622848. Its totient is φ = 14116002560.

The previous prime is 42649381501. The next prime is 42649381513. The reversal of 42649381506 is 60518394624.

42649381506 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (42649381501) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 920266 + ... + 965498.

It is an arithmetic number, because the mean of its divisors is an integer number (2684456964).

Almost surely, 2^42649381506 is an apocalyptic number.

42649381506 is an abundant number, since it is smaller than the sum of its proper divisors (43253241342).

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

42649381506 is a wasteful number, since it uses less digits than its factorization.

42649381506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46346.

The product of its (nonzero) digits is 1244160, while the sum is 48.

The spelling of 42649381506 in words is "forty-two billion, six hundred forty-nine million, three hundred eighty-one thousand, five hundred six".