66677498593440 has 192 divisors, whose sum is σ = 241649996716800. Its totient is φ = 15138285281280.

The previous prime is 66677498593399. The next prime is 66677498593451. The reversal of 66677498593440 is 4439589477666.

It is a super-2 number, since 2×66677498593440² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 66091621 + ... + 67092900.

It is an arithmetic number, because the mean of its divisors is an integer number (1258593732900).

Almost surely, 2^{66677498593440} is an apocalyptic number.

66677498593440 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

66677498593440 is an abundant number, since it is smaller than the sum of its proper divisors (174972498123360).

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

66677498593440 is a wasteful number, since it uses less digits than its factorization.

66677498593440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133184695 (or 133184687 counting only the distinct ones).

The product of its (nonzero) digits is 6584094720, while the sum is 78.

The spelling of 66677498593440 in words is "sixty-six trillion, six hundred seventy-seven billion, four hundred ninety-eight million, five hundred ninety-three thousand, four hundred forty".