6858136464 has 60 divisors (see below), whose sum is σ = 18820362384. Its totient is φ = 2151567872.

The previous prime is 6858136463. The next prime is 6858136477. The reversal of 6858136464 is 4646318586.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is not an unprimeable number, because it can be changed into a prime (6858136463) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 233322 + ... + 261065.

Almost surely, 2^6858136464 is an apocalyptic number.

It is an amenable number.

6858136464 is an abundant number, since it is smaller than the sum of its proper divisors (11962225920).

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

6858136464 is a wasteful number, since it uses less digits than its factorization.

6858136464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 494432 (or 494409 counting only the distinct ones).

The product of its digits is 3317760, while the sum is 51.

The square root of 6858136464 is about 82813.8663751428. The cubic root of 6858136464 is about 1899.9202611042.

The spelling of 6858136464 in words is "six billion, eight hundred fifty-eight million, one hundred thirty-six thousand, four hundred sixty-four".