9643509456 has 80 divisors (see below), whose sum is σ = 28688782848. Its totient is φ = 2734243200.

The previous prime is 9643509401. The next prime is 9643509479. The reversal of 9643509456 is 6549053469.

It is a super-2 number, since 2×9643509456² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 9643509399 and 9643509408.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 65530 + ... + 153561.

Almost surely, 2^9643509456 is an apocalyptic number.

It is an amenable number.

9643509456 is an abundant number, since it is smaller than the sum of its proper divisors (19045273392).

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

9643509456 is a wasteful number, since it uses less digits than its factorization.

9643509456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219240 (or 219234 counting only the distinct ones).

The product of its (nonzero) digits is 3499200, while the sum is 51.

The square root of 9643509456 is about 98201.3719659761. The cubic root of 9643509456 is about 2128.5231120638.

The spelling of 9643509456 in words is "nine billion, six hundred forty-three million, five hundred nine thousand, four hundred fifty-six".