3642571531038 has 64 divisors (see below), whose sum is σ = 8025803315712. Its totient is φ = 1092927454080.

The previous prime is 3642571531031. The next prime is 3642571531111. The reversal of 3642571531038 is 8301351752463.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3642571531031) 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 31 ways as a sum of consecutive naturals, for example, 49268956 + ... + 49342832.

It is an arithmetic number, because the mean of its divisors is an integer number (125403176808).

Almost surely, 2^{3642571531038} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3642571531038, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4012901657856).

3642571531038 is an abundant number, since it is smaller than the sum of its proper divisors (4383231784674).

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

3642571531038 is a wasteful number, since it uses less digits than its factorization.

3642571531038 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81249.

The product of its (nonzero) digits is 1814400, while the sum is 48.

The spelling of 3642571531038 in words is "three trillion, six hundred forty-two billion, five hundred seventy-one million, five hundred thirty-one thousand, thirty-eight".