208249422542144 has 14 divisors (see below), whose sum is σ = 413244947857194. Its totient is φ = 104124711271040.

The previous prime is 208249422542107. The next prime is 208249422542201. The reversal of 208249422542144 is 441245224942802.

It can be written as a sum of positive squares in only one way, i.e., 153856437516544 + 54392985025600 = 12403888^2 + 7375160^2 .

It is a super-2 number, since 2×208249422542144² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1626948613547 + ... + 1626948613674.

Almost surely, 2^{208249422542144} is an apocalyptic number.

It is an amenable number.

208249422542144 is a deficient number, since it is larger than the sum of its proper divisors (204995525315050).

208249422542144 is an equidigital number, since it uses as much as digits as its factorization.

208249422542144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3253897227233 (or 3253897227223 counting only the distinct ones).

The product of its (nonzero) digits is 11796480, while the sum is 53.

The spelling of 208249422542144 in words is "two hundred eight trillion, two hundred forty-nine billion, four hundred twenty-two million, five hundred forty-two thousand, one hundred forty-four".