6961522456571 has 16 divisors (see below), whose sum is σ = 7279141089024. Its totient is φ = 6651695348064.

The previous prime is 6961522456547. The next prime is 6961522456613. The reversal of 6961522456571 is 1756542251696.

It is a de Polignac number, because none of the positive numbers 2^k-6961522456571 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6961522456571.

It is not an unprimeable number, because it can be changed into a prime (6961522455571) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6274145 + ... + 7299858.

It is an arithmetic number, because the mean of its divisors is an integer number (454946318064).

Almost surely, 2^{6961522456571} is an apocalyptic number.

6961522456571 is a deficient number, since it is larger than the sum of its proper divisors (317618632453).

6961522456571 is a wasteful number, since it uses less digits than its factorization.

6961522456571 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13574290.

The product of its digits is 27216000, while the sum is 59.

The spelling of 6961522456571 in words is "six trillion, nine hundred sixty-one billion, five hundred twenty-two million, four hundred fifty-six thousand, five hundred seventy-one".