8615212801 has 4 divisors (see below), whose sum is σ = 9277921492. Its totient is φ = 7952504112.

The previous prime is 8615212789. The next prime is 8615212831. The reversal of 8615212801 is 1082125168.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 765075600 + 7850137201 = 27660^2 + 88601^2 .

It is a cyclic number.

It is not a de Polignac number, because 8615212801 - 2⁷ = 8615212673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8615212831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 331354326 + ... + 331354351.

It is an arithmetic number, because the mean of its divisors is an integer number (2319480373).

Almost surely, 2^8615212801 is an apocalyptic number.

It is an amenable number.

8615212801 is a deficient number, since it is larger than the sum of its proper divisors (662708691).

8615212801 is a wasteful number, since it uses less digits than its factorization.

8615212801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 662708690.

The product of its (nonzero) digits is 7680, while the sum is 34.

The square root of 8615212801 is about 92818.1706402362. The cubic root of 8615212801 is about 2050.0069641643.

Adding to 8615212801 its reverse (1082125168), we get a palindrome (9697337969).

The spelling of 8615212801 in words is "eight billion, six hundred fifteen million, two hundred twelve thousand, eight hundred one".