427166006400 has 2016 divisors, whose sum is σ = 1908888933780. Its totient is φ = 94058496000.

The previous prime is 427166006359. The next prime is 427166006447. The reversal of 427166006400 is 4600661724.

427166006400 is a `hidden beast` number, since 4 + 2 + 7 + 1 + 6 + 6 + 0 + 0 + 640 + 0 = 666.

It can be written as a sum of positive squares in 6 ways, for example, as 360316869696 + 66849136704 = 600264^2 + 258552^2 .

It is a tau number, because it is divible by the number of its divisors (2016).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 251 ways as a sum of consecutive naturals, for example, 4229366350 + ... + 4229366450.

Almost surely, 2^427166006400 is an apocalyptic number.

427166006400 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 427166006400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (954444466890).

427166006400 is an abundant number, since it is smaller than the sum of its proper divisors (1481722927380).

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

427166006400 is a wasteful number, since it uses less digits than its factorization.

427166006400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194 (or 155 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 36.

The spelling of 427166006400 in words is "four hundred twenty-seven billion, one hundred sixty-six million, six thousand, four hundred".