214454504661621 has 16 divisors (see below), whose sum is σ = 326788248449664. Its totient is φ = 122545269301824.

The previous prime is 214454504661611. The next prime is 214454504661637. The reversal of 214454504661621 is 126166405454412.

It is not a de Polignac number, because 214454504661621 - 2²⁹ = 214453967790709 is a prime.

It is a super-2 number, since 2×214454504661621² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (214454504661601) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10555051 + ... + 23244743.

It is an arithmetic number, because the mean of its divisors is an integer number (20424265528104).

Almost surely, 2^{214454504661621} is an apocalyptic number.

214454504661621 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

214454504661621 is a deficient number, since it is larger than the sum of its proper divisors (112333743788043).

214454504661621 is a wasteful number, since it uses less digits than its factorization.

214454504661621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13494460.

The product of its (nonzero) digits is 5529600, while the sum is 51.

The spelling of 214454504661621 in words is "two hundred fourteen trillion, four hundred fifty-four billion, five hundred four million, six hundred sixty-one thousand, six hundred twenty-one".