66148905984 has 176 divisors, whose sum is σ = 202259582976. Its totient is φ = 18828288000.

The previous prime is 66148905971. The next prime is 66148905997. The reversal of 66148905984 is 48950984166.

It is an interprime number because it is at equal distance from previous prime (66148905971) and next prime (66148905997).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5821909 + ... + 5833259.

It is an arithmetic number, because the mean of its divisors is an integer number (1149202176).

Almost surely, 2^66148905984 is an apocalyptic number.

66148905984 is a gapful number since it is divisible by the number (64) 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 66148905984, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (101129791488).

66148905984 is an abundant number, since it is smaller than the sum of its proper divisors (136110676992).

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

66148905984 is a wasteful number, since it uses less digits than its factorization.

66148905984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11652 (or 11634 counting only the distinct ones).

The product of its (nonzero) digits is 14929920, while the sum is 60.

The spelling of 66148905984 in words is "sixty-six billion, one hundred forty-eight million, nine hundred five thousand, nine hundred eighty-four".