5645121010 has 8 divisors (see below), whose sum is σ = 10161217836. Its totient is φ = 2258048400.

The previous prime is 5645120983. The next prime is 5645121017. The reversal of 5645121010 is 101215465.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 5421229641 + 223891369 = 73629^2 + 14963^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (5645121017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 282256041 + ... + 282256060.

Almost surely, 2^5645121010 is an apocalyptic number.

5645121010 is a deficient number, since it is larger than the sum of its proper divisors (4516096826).

5645121010 is a wasteful number, since it uses less digits than its factorization.

5645121010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 564512108.

The product of its (nonzero) digits is 1200, while the sum is 25.

The square root of 5645121010 is about 75134.0203236856. The cubic root of 5645121010 is about 1780.5646706167.

Adding to 5645121010 its reverse (101215465), we get a palindrome (5746336475).

The spelling of 5645121010 in words is "five billion, six hundred forty-five million, one hundred twenty-one thousand, ten".