418769221992 has 128 divisors (see below), whose sum is σ = 1202565312000. Its totient is φ = 120185130240.

The previous prime is 418769221987. The next prime is 418769222041. The reversal of 418769221992 is 299122967814.

It is a super-2 number, since 2×418769221992² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20148918 + ... + 20169690.

It is an arithmetic number, because the mean of its divisors is an integer number (9395041500).

Almost surely, 2^418769221992 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 418769221992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (601282656000).

418769221992 is an abundant number, since it is smaller than the sum of its proper divisors (783796090008).

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

418769221992 is a wasteful number, since it uses less digits than its factorization.

418769221992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24831 (or 24827 counting only the distinct ones).

The product of its digits is 7838208, while the sum is 60.

The spelling of 418769221992 in words is "four hundred eighteen billion, seven hundred sixty-nine million, two hundred twenty-one thousand, nine hundred ninety-two".