6464809142 has 16 divisors (see below), whose sum is σ = 10580792400. Its totient is φ = 2937990240.

The previous prime is 6464809129. The next prime is 6464809177. The reversal of 6464809142 is 2419084646.

It is a junction number, because it is equal to n+sod(n) for n = 6464809093 and 6464809102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 104084 + ... + 154152.

It is an arithmetic number, because the mean of its divisors is an integer number (661299525).

Almost surely, 2^6464809142 is an apocalyptic number.

6464809142 is a deficient number, since it is larger than the sum of its proper divisors (4115983258).

6464809142 is a wasteful number, since it uses less digits than its factorization.

6464809142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55951.

The product of its (nonzero) digits is 331776, while the sum is 44.

The square root of 6464809142 is about 80404.0368513920. The cubic root of 6464809142 is about 1862.8815264047.

The spelling of 6464809142 in words is "six billion, four hundred sixty-four million, eight hundred nine thousand, one hundred forty-two".