215454340104 has 32 divisors (see below), whose sum is σ = 570320313120. Its totient is φ = 67593518336.

The previous prime is 215454340099. The next prime is 215454340117. The reversal of 215454340104 is 401043454512.

It is a happy 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, 264036774 + ... + 264037589.

It is an arithmetic number, because the mean of its divisors is an integer number (17822509785).

Almost surely, 2^215454340104 is an apocalyptic number.

215454340104 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

215454340104 is an abundant number, since it is smaller than the sum of its proper divisors (354865973016).

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

215454340104 is a wasteful number, since it uses less digits than its factorization.

215454340104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 528074389 (or 528074385 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 33.

Adding to 215454340104 its reverse (401043454512), we get a palindrome (616497794616).

The spelling of 215454340104 in words is "two hundred fifteen billion, four hundred fifty-four million, three hundred forty thousand, one hundred four".