66462865848 has 224 divisors, whose sum is σ = 199900431360. Its totient is φ = 20633149440.

The previous prime is 66462865823. The next prime is 66462865907. The reversal of 66462865848 is 84856826466.

It is a happy number.

66462865848 is a `hidden beast` number, since 6 + 6 + 46 + 2 + 8 + 6 + 584 + 8 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 9613513 + ... + 9620423.

It is an arithmetic number, because the mean of its divisors is an integer number (892412640).

Almost surely, 2^66462865848 is an apocalyptic number.

66462865848 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66462865848, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99950215680).

66462865848 is an abundant number, since it is smaller than the sum of its proper divisors (133437565512).

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

66462865848 is a wasteful number, since it uses less digits than its factorization.

66462865848 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7049 (or 7030 counting only the distinct ones).

The product of its digits is 106168320, while the sum is 63.

The spelling of 66462865848 in words is "sixty-six billion, four hundred sixty-two million, eight hundred sixty-five thousand, eight hundred forty-eight".