6450436551 has 32 divisors (see below), whose sum is σ = 9565436608. Its totient is φ = 3840721920.

The previous prime is 6450436537. The next prime is 6450436567. The reversal of 6450436551 is 1556340546.

It is not a de Polignac number, because 6450436551 - 2⁹ = 6450436039 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6450436501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 248835 + ... + 273531.

It is an arithmetic number, because the mean of its divisors is an integer number (298919894).

Almost surely, 2^6450436551 is an apocalyptic number.

6450436551 is a deficient number, since it is larger than the sum of its proper divisors (3115000057).

6450436551 is a wasteful number, since it uses less digits than its factorization.

6450436551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24931.

The product of its (nonzero) digits is 216000, while the sum is 39.

The square root of 6450436551 is about 80314.6098228710. The cubic root of 6450436551 is about 1861.4999800516.

The spelling of 6450436551 in words is "six billion, four hundred fifty million, four hundred thirty-six thousand, five hundred fifty-one".