16420417400 has 24 divisors (see below), whose sum is σ = 38177470920. Its totient is φ = 6568166880.

The previous prime is 16420417399. The next prime is 16420417421. The reversal of 16420417400 is 471402461.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 41050844 + ... + 41051243.

It is an arithmetic number, because the mean of its divisors is an integer number (1590727955).

Almost surely, 2^16420417400 is an apocalyptic number.

16420417400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16420417400 is an abundant number, since it is smaller than the sum of its proper divisors (21757053520).

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

16420417400 is a wasteful number, since it uses less digits than its factorization.

16420417400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82102103 (or 82102094 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 29.

Adding to 16420417400 its reverse (471402461), we get a palindrome (16891819861).

The spelling of 16420417400 in words is "sixteen billion, four hundred twenty million, four hundred seventeen thousand, four hundred".