64750990240000 has 135 divisors (see below), whose sum is σ = 161517637949437. Its totient is φ = 25899108608000.

The previous prime is 64750990239953. The next prime is 64750990240007. The reversal of 64750990240000 is 4209905746.

The square root of 64750990240000 is 8046800.

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

It can be written as a sum of positive squares in 7 ways, for example, as 62459811535104 + 2291178704896 = 7903152^2 + 1513664^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64750990240007) by changing a digit.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 3218709942 + ... + 3218730058.

Almost surely, 2^{64750990240000} is an apocalyptic number.

64750990240000 is the 8046800-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64750990240000

64750990240000 is an abundant number, since it is smaller than the sum of its proper divisors (96766647709437).

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

64750990240000 is an frugal number, since it uses more digits than its factorization.

64750990240000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40270 (or 20124 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 46.

The spelling of 64750990240000 in words is "sixty-four trillion, seven hundred fifty billion, nine hundred ninety million, two hundred forty thousand".