64821360970 has 16 divisors (see below), whose sum is σ = 116683050600. Its totient is φ = 25927521984.

The previous prime is 64821360949. The next prime is 64821360979. The reversal of 64821360970 is 7906312846.

It can be written as a sum of positive squares in 4 ways, for example, as 27405809209 + 37415551761 = 165547^2 + 193431^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 64821360970.

It is not an unprimeable number, because it can be changed into a prime (64821360979) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 171964 + ... + 399016.

Almost surely, 2^64821360970 is an apocalyptic number.

64821360970 is a deficient number, since it is larger than the sum of its proper divisors (51861689630).

64821360970 is a wasteful number, since it uses less digits than its factorization.

64821360970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255609.

The product of its (nonzero) digits is 435456, while the sum is 46.

The spelling of 64821360970 in words is "sixty-four billion, eight hundred twenty-one million, three hundred sixty thousand, nine hundred seventy".