666101464848 has 320 divisors, whose sum is σ = 1961626828800. Its totient is φ = 216360668160.

The previous prime is 666101464801. The next prime is 666101464849. The reversal of 666101464848 is 848464101666.

It is a super-2 number, since 2×666101464848² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 666101464794 and 666101464803.

It is not an unprimeable number, because it can be changed into a prime (666101464849) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1356621883 + ... + 1356622373.

It is an arithmetic number, because the mean of its divisors is an integer number (6130083840).

Almost surely, 2^666101464848 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 666101464848, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (980813414400).

666101464848 is an abundant number, since it is smaller than the sum of its proper divisors (1295525363952).

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

666101464848 is a wasteful number, since it uses less digits than its factorization.

666101464848 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1027 (or 1015 counting only the distinct ones).

The product of its (nonzero) digits is 5308416, while the sum is 54.

The spelling of 666101464848 in words is "six hundred sixty-six billion, one hundred one million, four hundred sixty-four thousand, eight hundred forty-eight".