9955645472 has 12 divisors (see below), whose sum is σ = 19600177086. Its totient is φ = 4977822720.

The previous prime is 9955645471. The next prime is 9955645481. The reversal of 9955645472 is 2745465599.

It can be written as a sum of positive squares in only one way, i.e., 6974922256 + 2980723216 = 83516^2 + 54596^2 .

It is a super-2 number, since 2×9955645472² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (9955645471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155556929 + ... + 155556992.

Almost surely, 2^9955645472 is an apocalyptic number.

It is an amenable number.

9955645472 is a deficient number, since it is larger than the sum of its proper divisors (9644531614).

9955645472 is a wasteful number, since it uses less digits than its factorization.

9955645472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 311113931 (or 311113923 counting only the distinct ones).

The product of its digits is 13608000, while the sum is 56.

The square root of 9955645472 is about 99777.9808975908. The cubic root of 9955645472 is about 2151.2446711874.

The spelling of 9955645472 in words is "nine billion, nine hundred fifty-five million, six hundred forty-five thousand, four hundred seventy-two".