6455667578 has 16 divisors (see below), whose sum is σ = 9838039680. Its totient is φ = 3176693376.

The previous prime is 6455667539. The next prime is 6455667629. The reversal of 6455667578 is 8757665546.

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, 58226 + ... + 127677.

It is an arithmetic number, because the mean of its divisors is an integer number (614877480).

Almost surely, 2^6455667578 is an apocalyptic number.

6455667578 is a deficient number, since it is larger than the sum of its proper divisors (3382372102).

6455667578 is a wasteful number, since it uses less digits than its factorization.

6455667578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186181.

The product of its digits is 42336000, while the sum is 59.

The square root of 6455667578 is about 80347.1690727184. The cubic root of 6455667578 is about 1862.0030429330.

The spelling of 6455667578 in words is "six billion, four hundred fifty-five million, six hundred sixty-seven thousand, five hundred seventy-eight".