6551263446 has 96 divisors (see below), whose sum is σ = 17379865440. Its totient is φ = 1626153984.

The previous prime is 6551263399. The next prime is 6551263469. The reversal of 6551263446 is 6443621556.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 6551263398 and 6551263407.

It is a congruent number.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 14560 + ... + 115388.

It is an arithmetic number, because the mean of its divisors is an integer number (181040265).

Almost surely, 2^6551263446 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6551263446, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8689932720).

6551263446 is an abundant number, since it is smaller than the sum of its proper divisors (10828601994).

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

6551263446 is a wasteful number, since it uses less digits than its factorization.

6551263446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100878 (or 100871 counting only the distinct ones).

The product of its digits is 518400, while the sum is 42.

The square root of 6551263446 is about 80939.8755002749. The cubic root of 6551263446 is about 1871.1489261068.

The spelling of 6551263446 in words is "six billion, five hundred fifty-one million, two hundred sixty-three thousand, four hundred forty-six".