66497625000 has 896 divisors, whose sum is σ = 261559152000. Its totient is φ = 15552000000.

The previous prime is 66497624989. The next prime is 66497625053. The reversal of 66497625000 is 52679466.

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

It is an unprimeable number.

It is a polite number, since it can be written in 223 ways as a sum of consecutive naturals, for example, 1090124970 + ... + 1090125030.

Almost surely, 2^66497625000 is an apocalyptic number.

66497625000 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 66497625000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (130779576000).

66497625000 is an abundant number, since it is smaller than the sum of its proper divisors (195061527000).

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

66497625000 is a wasteful number, since it uses less digits than its factorization.

66497625000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142 (or 107 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 45.

The spelling of 66497625000 in words is "sixty-six billion, four hundred ninety-seven million, six hundred twenty-five thousand".