208126987464 has 32 divisors (see below), whose sum is σ = 567619057440. Its totient is φ = 63068784000.

The previous prime is 208126987463. The next prime is 208126987477. The reversal of 208126987464 is 464789621802.

208126987464 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (208126987463) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 394179637 + ... + 394180164.

It is an arithmetic number, because the mean of its divisors is an integer number (17738095545).

Almost surely, 2^208126987464 is an apocalyptic number.

208126987464 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

208126987464 is an abundant number, since it is smaller than the sum of its proper divisors (359492069976).

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

208126987464 is a wasteful number, since it uses less digits than its factorization.

208126987464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 788359821 (or 788359817 counting only the distinct ones).

The product of its (nonzero) digits is 9289728, while the sum is 57.

The spelling of 208126987464 in words is "two hundred eight billion, one hundred twenty-six million, nine hundred eighty-seven thousand, four hundred sixty-four".