711655898409 has 45 divisors (see below), whose sum is σ = 1079966715597. Its totient is φ = 467022047976.

The previous prime is 711655898383. The next prime is 711655898413. The reversal of 711655898409 is 904898556117.

The square root of 711655898409 is 843597.

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

711655898409 is a `hidden beast` number, since 7 + 1 + 1 + 6 + 5 + 589 + 8 + 40 + 9 = 666.

It is not a de Polignac number, because 711655898409 - 2³¹ = 709508414761 is a prime.

It is not an unprimeable number, because it can be changed into a prime (711655898449) by changing a digit.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 508688292 + ... + 508689690.

Almost surely, 2^711655898409 is an apocalyptic number.

711655898409 is the 843597-th square number.

711655898409 is the 421799-th centered octagonal number.

It is an amenable number.

711655898409 is a deficient number, since it is larger than the sum of its proper divisors (368310817188).

711655898409 is an frugal number, since it uses more digits than its factorization.

711655898409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2944 (or 1469 counting only the distinct ones).

The product of its (nonzero) digits is 21772800, while the sum is 63.

The spelling of 711655898409 in words is "seven hundred eleven billion, six hundred fifty-five million, eight hundred ninety-eight thousand, four hundred nine".