66067626240 has 1728 divisors, whose sum is σ = 307431989760. Its totient is φ = 13138329600.

The previous prime is 66067626227. The next prime is 66067626241. The reversal of 66067626240 is 4262676066.

It is a tau number, because it is divible by the number of its divisors (1728).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (66067626241) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 1083075810 + ... + 1083075870.

Almost surely, 2^66067626240 is an apocalyptic number.

66067626240 is a gapful number since it is divisible by the number (60) 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 66067626240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (153715994880).

66067626240 is an abundant number, since it is smaller than the sum of its proper divisors (241364363520).

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

66067626240 is a wasteful number, since it uses less digits than its factorization.

66067626240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157 (or 126 counting only the distinct ones).

The product of its (nonzero) digits is 870912, while the sum is 45.

The spelling of 66067626240 in words is "sixty-six billion, sixty-seven million, six hundred twenty-six thousand, two hundred forty".