8127202801 has 9 divisors (see below), whose sum is σ = 8635023691. Its totient is φ = 7647689632.

The previous prime is 8127202799. The next prime is 8127202829. The reversal of 8127202801 is 1082027218.

The square root of 8127202801 is 90151.

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

It can be written as a sum of positive squares in only one way, i.e., 6327407025 + 1799795776 = 79545^2 + 42424^2 .

It is not a de Polignac number, because 8127202801 - 2¹ = 8127202799 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8127202841) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1529916 + ... + 1535218.

Almost surely, 2^8127202801 is an apocalyptic number.

8127202801 is the 90151-st square number.

8127202801 is the 45076-th centered octagonal number.

It is an amenable number.

8127202801 is a deficient number, since it is larger than the sum of its proper divisors (507820890).

8127202801 is an frugal number, since it uses more digits than its factorization.

8127202801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10640 (or 5320 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 31.

The cubic root of 8127202801 is about 2010.5445420317.

The spelling of 8127202801 in words is "eight billion, one hundred twenty-seven million, two hundred two thousand, eight hundred one".