27218453450680 has 32 divisors (see below), whose sum is σ = 61248430857600. Its totient is φ = 10886152830336.

The previous prime is 27218453450663. The next prime is 27218453450689. The reversal of 27218453450680 is 8605435481272.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27218453450689) 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, 38033235 + ... + 38742274.

It is an arithmetic number, because the mean of its divisors is an integer number (1914013464300).

Almost surely, 2^{27218453450680} is an apocalyptic number.

27218453450680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27218453450680 is an abundant number, since it is smaller than the sum of its proper divisors (34029977406920).

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

27218453450680 is a wasteful number, since it uses less digits than its factorization.

27218453450680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76784383 (or 76784379 counting only the distinct ones).

The product of its (nonzero) digits is 12902400, while the sum is 55.

The spelling of 27218453450680 in words is "twenty-seven trillion, two hundred eighteen billion, four hundred fifty-three million, four hundred fifty thousand, six hundred eighty".