213967509490 has 48 divisors (see below), whose sum is σ = 447496335936. Its totient is φ = 72157573440.

The previous prime is 213967509487. The next prime is 213967509521. The reversal of 213967509490 is 94905769312.

It is a happy number.

213967509490 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 150264 + ... + 671203.

It is an arithmetic number, because the mean of its divisors is an integer number (9322840332).

Almost surely, 2^213967509490 is an apocalyptic number.

213967509490 is an abundant number, since it is smaller than the sum of its proper divisors (233528826446).

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

213967509490 is an equidigital number, since it uses as much as digits as its factorization.

213967509490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 821603 (or 821542 counting only the distinct ones).

The product of its (nonzero) digits is 3674160, while the sum is 55.

The spelling of 213967509490 in words is "two hundred thirteen billion, nine hundred sixty-seven million, five hundred nine thousand, four hundred ninety".