711439953961 has 9 divisors (see below), whose sum is σ = 782006180893. Its totient is φ = 646755159820.

The previous prime is 711439953947. The next prime is 711439953979. The reversal of 711439953961 is 169359934117.

The square root of 711439953961 is 843469.

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

It is not a de Polignac number, because 711439953961 - 2¹¹ = 711439951913 is a prime.

It is a super-2 number, since 2×711439953961² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 711439953896 and 711439953905.

It is not an unprimeable number, because it can be changed into a prime (711439953941) 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, 9239820 + ... + 9316498.

Almost surely, 2^711439953961 is an apocalyptic number.

711439953961 is the 843469-th square number.

711439953961 is the 421735-th centered octagonal number.

It is an amenable number.

711439953961 is a deficient number, since it is larger than the sum of its proper divisors (70566226932).

711439953961 is an frugal number, since it uses more digits than its factorization.

711439953961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153380 (or 76690 counting only the distinct ones).

The product of its digits is 5511240, while the sum is 58.

The spelling of 711439953961 in words is "seven hundred eleven billion, four hundred thirty-nine million, nine hundred fifty-three thousand, nine hundred sixty-one".