64428714570 has 128 divisors (see below), whose sum is σ = 173449486080. Its totient is φ = 15179028480.

The previous prime is 64428714547. The next prime is 64428714589. The reversal of 64428714570 is 7541782446.

It is a super-2 number, since 2×64428714570² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 12366126 + ... + 12371334.

It is an arithmetic number, because the mean of its divisors is an integer number (1355074110).

Almost surely, 2^64428714570 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64428714570, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86724743040).

64428714570 is an abundant number, since it is smaller than the sum of its proper divisors (109020771510).

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

64428714570 is a wasteful number, since it uses less digits than its factorization.

64428714570 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6280.

The product of its (nonzero) digits is 1505280, while the sum is 48.

The spelling of 64428714570 in words is "sixty-four billion, four hundred twenty-eight million, seven hundred fourteen thousand, five hundred seventy".