64227889152 has 702 divisors, whose sum is σ = 229027682754. Its totient is φ = 17278894080.

The previous prime is 64227889127. The next prime is 64227889181. The reversal of 64227889152 is 25198872246.

64227889152 is a `hidden beast` number, since 6 + 422 + 7 + 88 + 91 + 52 = 666.

It can be written as a sum of positive squares in only one way, i.e., 62492000256 + 1735888896 = 249984^2 + 41664^2 .

Its product of digits (3870720) is a multiple of the sum of its prime divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 1735888878 + ... + 1735888914.

Almost surely, 2^64227889152 is an apocalyptic number.

64227889152 is a gapful number since it is divisible by the number (62) 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 64227889152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (114513841377).

64227889152 is an abundant number, since it is smaller than the sum of its proper divisors (164799793602).

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

64227889152 is a wasteful number, since it uses less digits than its factorization.

64227889152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143 (or 80 counting only the distinct ones).

The product of its digits is 3870720, while the sum is 54.

It can be divided in two parts, 64 and 227889152, that added together give a square (227889216 = 15096²).

The spelling of 64227889152 in words is "sixty-four billion, two hundred twenty-seven million, eight hundred eighty-nine thousand, one hundred fifty-two".