6457148644 has 12 divisors (see below), whose sum is σ = 11343980844. Its totient is φ = 3216011264.

The previous prime is 6457148591. The next prime is 6457148653. The reversal of 6457148644 is 4468417546.

It can be written as a sum of positive squares in 2 ways, for example, as 3180960000 + 3276188644 = 56400^2 + 57238^2 .

It is a super-2 number, since 2×6457148644² = 83389537221422077472, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3139609 + ... + 3141664.

It is an arithmetic number, because the mean of its divisors is an integer number (945331737).

Almost surely, 2^6457148644 is an apocalyptic number.

It is an amenable number.

6457148644 is a deficient number, since it is larger than the sum of its proper divisors (4886832200).

6457148644 is a wasteful number, since it uses less digits than its factorization.

6457148644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6281534 (or 6281532 counting only the distinct ones).

The product of its digits is 2580480, while the sum is 49.

The square root of 6457148644 is about 80356.3852098886. The cubic root of 6457148644 is about 1862.1454262728.

The spelling of 6457148644 in words is "six billion, four hundred fifty-seven million, one hundred forty-eight thousand, six hundred forty-four".