418456718421 has 24 divisors (see below), whose sum is σ = 658722013920. Its totient is φ = 235549192032.

The previous prime is 418456718401. The next prime is 418456718423. The reversal of 418456718421 is 124817654814.

It is a happy number.

It is not a de Polignac number, because 418456718421 - 2⁶ = 418456718357 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (418456718423) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21233766 + ... + 21253463.

It is an arithmetic number, because the mean of its divisors is an integer number (27446750580).

Almost surely, 2^418456718421 is an apocalyptic number.

It is an amenable number.

418456718421 is a deficient number, since it is larger than the sum of its proper divisors (240265295499).

418456718421 is a wasteful number, since it uses less digits than its factorization.

418456718421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42487313 (or 42487306 counting only the distinct ones).

The product of its digits is 1720320, while the sum is 51.

The spelling of 418456718421 in words is "four hundred eighteen billion, four hundred fifty-six million, seven hundred eighteen thousand, four hundred twenty-one".