6451745553 has 32 divisors (see below), whose sum is σ = 10431868800. Its totient is φ = 3908347200.

The previous prime is 6451745549. The next prime is 6451745561. The reversal of 6451745553 is 3555471546.

6451745553 is a `hidden beast` number, since 6 + 4 + 51 + 7 + 45 + 553 = 666.

It is not a de Polignac number, because 6451745553 - 2² = 6451745549 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6451745499 and 6451745508.

It is not an unprimeable number, because it can be changed into a prime (6451745753) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 941343 + ... + 948171.

It is an arithmetic number, because the mean of its divisors is an integer number (325995900).

Almost surely, 2^6451745553 is an apocalyptic number.

It is an amenable number.

6451745553 is a deficient number, since it is larger than the sum of its proper divisors (3980123247).

6451745553 is a wasteful number, since it uses less digits than its factorization.

6451745553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10030 (or 10024 counting only the distinct ones).

The product of its digits is 1260000, while the sum is 45.

The square root of 6451745553 is about 80322.7586241907. The cubic root of 6451745553 is about 1861.6258910328.

The spelling of 6451745553 in words is "six billion, four hundred fifty-one million, seven hundred forty-five thousand, five hundred fifty-three".