6426123660 has 180 divisors, whose sum is σ = 22158902304. Its totient is φ = 1557800640.

The previous prime is 6426123611. The next prime is 6426123689. The reversal of 6426123660 is 663216246.

6426123660 is a `hidden beast` number, since 6 + 4 + 2 + 612 + 36 + 6 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (180).

It is a super-2 number, since 2×6426123660² = 82590130587223591200, which contains 22 as substring.

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 59 ways as a sum of consecutive naturals, for example, 179629 + ... + 212411.

Almost surely, 2^6426123660 is an apocalyptic number.

6426123660 is a gapful number since it is divisible by the number (60) 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 6426123660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11079451152).

6426123660 is an abundant number, since it is smaller than the sum of its proper divisors (15732778644).

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

6426123660 is a wasteful number, since it uses less digits than its factorization.

6426123660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32826 (or 32804 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 36.

The square root of 6426123660 is about 80163.1066014785. The cubic root of 6426123660 is about 1859.1582559624.

The spelling of 6426123660 in words is "six billion, four hundred twenty-six million, one hundred twenty-three thousand, six hundred sixty".