7285901976081 has 27 divisors (see below), whose sum is σ = 10601976015579. Its totient is φ = 4821578619552.

The previous prime is 7285901976049. The next prime is 7285901976151. The reversal of 7285901976081 is 1806791095827.

The square root of 7285901976081 is 2699241.

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

7285901976081 is a `hidden beast` number, since 7 + 2 + 8 + 5 + 9 + 0 + 19 + 7 + 608 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1339053980625 + 5946847995456 = 1157175^2 + 2438616^2 .

It is not a de Polignac number, because 7285901976081 - 2⁵ = 7285901976049 is a prime.

It is a super-2 number, since 2×7285901976081² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (7285901976581) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 1125580261 + ... + 1125586733.

Almost surely, 2^{7285901976081} is an apocalyptic number.

7285901976081 is the 2699241-st square number.

7285901976081 is the 1349621-st centered octagonal number.

It is an amenable number.

7285901976081 is a deficient number, since it is larger than the sum of its proper divisors (3316074039498).

7285901976081 is an frugal number, since it uses more digits than its factorization.

7285901976081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13230 (or 6615 counting only the distinct ones).

The product of its (nonzero) digits is 15240960, while the sum is 63.

The spelling of 7285901976081 in words is "seven trillion, two hundred eighty-five billion, nine hundred one million, nine hundred seventy-six thousand, eighty-one".