635542225534642 has 16 divisors (see below), whose sum is σ = 967550278024512. Its totient is φ = 313025548374000.

The previous prime is 635542225534639. The next prime is 635542225534663. The reversal of 635542225534642 is 246435522245536.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4976673 + ... + 35997940.

It is an arithmetic number, because the mean of its divisors is an integer number (60471892376532).

Almost surely, 2^{635542225534642} is an apocalyptic number.

635542225534642 is a deficient number, since it is larger than the sum of its proper divisors (332008052489870).

635542225534642 is a wasteful number, since it uses less digits than its factorization.

635542225534642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41090433.

The product of its digits is 207360000, while the sum is 58.

The spelling of 635542225534642 in words is "six hundred thirty-five trillion, five hundred forty-two billion, two hundred twenty-five million, five hundred thirty-four thousand, six hundred forty-two".