220935853578638 has 12 divisors (see below), whose sum is σ = 364270270983360. Its totient is φ = 100425387990180.

The previous prime is 220935853578631. The next prime is 220935853578667. The reversal of 220935853578638 is 836875358539022.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220935853578631) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 456479036078 + ... + 456479036561.

It is an arithmetic number, because the mean of its divisors is an integer number (30355855915280).

Almost surely, 2^{220935853578638} is an apocalyptic number.

220935853578638 is a deficient number, since it is larger than the sum of its proper divisors (143334417404722).

220935853578638 is a wasteful number, since it uses less digits than its factorization.

220935853578638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 912958072663 (or 912958072652 counting only the distinct ones).

The product of its (nonzero) digits is 2612736000, while the sum is 74.

The spelling of 220935853578638 in words is "two hundred twenty trillion, nine hundred thirty-five billion, eight hundred fifty-three million, five hundred seventy-eight thousand, six hundred thirty-eight".