961447393488 has 80 divisors (see below), whose sum is σ = 2594749925376. Its totient is φ = 306407602560.

The previous prime is 961447393481. The next prime is 961447393537. The reversal of 961447393488 is 884393744169.

It is a super-2 number, since 2×961447393488² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (961447393481) 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, 3768870 + ... + 4015877.

Almost surely, 2^961447393488 is an apocalyptic number.

It is an amenable number.

961447393488 is an abundant number, since it is smaller than the sum of its proper divisors (1633302531888).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

961447393488 is a wasteful number, since it uses less digits than its factorization.

961447393488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7784872 (or 7784866 counting only the distinct ones).

The product of its digits is 125411328, while the sum is 66.

The spelling of 961447393488 in words is "nine hundred sixty-one billion, four hundred forty-seven million, three hundred ninety-three thousand, four hundred eighty-eight".