208112157408 has 48 divisors (see below), whose sum is σ = 549912295296. Its totient is φ = 68911305600.

The previous prime is 208112157397. The next prime is 208112157427. The reversal of 208112157408 is 804751211802.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×208112157408² (a number of 23 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 in 7 ways as a sum of consecutive naturals, for example, 7163766 + ... + 7192757.

It is an arithmetic number, because the mean of its divisors is an integer number (11456506152).

Almost surely, 2^208112157408 is an apocalyptic number.

It is an amenable number.

208112157408 is an abundant number, since it is smaller than the sum of its proper divisors (341800137888).

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

208112157408 is a wasteful number, since it uses less digits than its factorization.

208112157408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14356687 (or 14356679 counting only the distinct ones).

The product of its (nonzero) digits is 35840, while the sum is 39.

The spelling of 208112157408 in words is "two hundred eight billion, one hundred twelve million, one hundred fifty-seven thousand, four hundred eight".