961744838447 has 16 divisors (see below), whose sum is σ = 1036578369024. Its totient is φ = 888985152000.

The previous prime is 961744838437. The next prime is 961744838449. The reversal of 961744838447 is 744838447169.

It is a cyclic number.

It is not a de Polignac number, because 961744838447 - 2³⁴ = 944564969263 is a prime.

It is a super-2 number, since 2×961744838447² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (961744838449) 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, 16079 + ... + 1386992.

It is an arithmetic number, because the mean of its divisors is an integer number (64786148064).

Almost surely, 2^961744838447 is an apocalyptic number.

961744838447 is a deficient number, since it is larger than the sum of its proper divisors (74833530577).

961744838447 is a wasteful number, since it uses less digits than its factorization.

961744838447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1403810.

The product of its digits is 130056192, while the sum is 65.

The spelling of 961744838447 in words is "nine hundred sixty-one billion, seven hundred forty-four million, eight hundred thirty-eight thousand, four hundred forty-seven".