64428642360 has 192 divisors, whose sum is σ = 223579699200. Its totient is φ = 16051698432.

The previous prime is 64428642347. The next prime is 64428642389. The reversal of 64428642360 is 6324682446.

64428642360 is a `hidden beast` number, since 6 + 4 + 4 + 286 + 4 + 2 + 360 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 265561 + ... + 446519.

It is an arithmetic number, because the mean of its divisors is an integer number (1164477600).

Almost surely, 2^64428642360 is an apocalyptic number.

64428642360 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 64428642360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (111789849600).

64428642360 is an abundant number, since it is smaller than the sum of its proper divisors (159151056840).

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

64428642360 is a wasteful number, since it uses less digits than its factorization.

64428642360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181042 (or 181035 counting only the distinct ones).

The product of its (nonzero) digits is 1327104, while the sum is 45.

The spelling of 64428642360 in words is "sixty-four billion, four hundred twenty-eight million, six hundred forty-two thousand, three hundred sixty".