418721671240 has 16 divisors (see below), whose sum is σ = 942123760380. Its totient is φ = 167488668480.

The previous prime is 418721671177. The next prime is 418721671241. The reversal of 418721671240 is 42176127814.

It can be written as a sum of positive squares in 2 ways, for example, as 417954492036 + 767179204 = 646494^2 + 27698^2 .

It is not an unprimeable number, because it can be changed into a prime (418721671241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5234020851 + ... + 5234020930.

Almost surely, 2^418721671240 is an apocalyptic number.

418721671240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

418721671240 is an abundant number, since it is smaller than the sum of its proper divisors (523402089140).

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

418721671240 is a wasteful number, since it uses less digits than its factorization.

418721671240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10468041792 (or 10468041788 counting only the distinct ones).

The product of its (nonzero) digits is 150528, while the sum is 43.

The spelling of 418721671240 in words is "four hundred eighteen billion, seven hundred twenty-one million, six hundred seventy-one thousand, two hundred forty".