64770250000 has 105 divisors (see below), whose sum is σ = 157172226451. Its totient is φ = 25857200000.

The previous prime is 64770249967. The next prime is 64770250001. The reversal of 64770250000 is 5207746.

The square root of 64770250000 is 254500.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 10 ways, for example, as 64278475024 + 491774976 = 253532^2 + 22176^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64770250001) by changing a digit.

It is a polite number, since it can be written in 20 ways as a sum of consecutive naturals, for example, 127249746 + ... + 127250254.

Almost surely, 2^64770250000 is an apocalyptic number.

64770250000 is the 254500-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64770250000

64770250000 is an abundant number, since it is smaller than the sum of its proper divisors (92401976451).

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

64770250000 is an frugal number, since it uses more digits than its factorization.

64770250000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1056 (or 516 counting only the distinct ones).

The product of its (nonzero) digits is 11760, while the sum is 31.

Adding to 64770250000 its reverse (5207746), we get a palindrome (64775457746).

The spelling of 64770250000 in words is "sixty-four billion, seven hundred seventy million, two hundred fifty thousand".