209026621484 has 24 divisors (see below), whose sum is σ = 366428193600. Its totient is φ = 104332999680.

The previous prime is 209026621481. The next prime is 209026621537. The reversal of 209026621484 is 484126620902.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (209026621481) 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, 6064652 + ... + 6099020.

It is an arithmetic number, because the mean of its divisors is an integer number (15267841400).

Almost surely, 2^209026621484 is an apocalyptic number.

It is an amenable number.

209026621484 is a deficient number, since it is larger than the sum of its proper divisors (157401572116).

209026621484 is a wasteful number, since it uses less digits than its factorization.

209026621484 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36953 (or 36951 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 44.

The spelling of 209026621484 in words is "two hundred nine billion, twenty-six million, six hundred twenty-one thousand, four hundred eighty-four".