66533751153240 has 64 divisors (see below), whose sum is σ = 228115718242560. Its totient is φ = 15207714549120.

The previous prime is 66533751153227. The next prime is 66533751153257. The reversal of 66533751153240 is 4235115733566.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39603422466 + ... + 39603424145.

It is an arithmetic number, because the mean of its divisors is an integer number (3564308097540).

Almost surely, 2^{66533751153240} is an apocalyptic number.

66533751153240 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

66533751153240 is an abundant number, since it is smaller than the sum of its proper divisors (161581967089320).

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

66533751153240 is a wasteful number, since it uses less digits than its factorization.

66533751153240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79206846632 (or 79206846628 counting only the distinct ones).

The product of its (nonzero) digits is 6804000, while the sum is 51.

The spelling of 66533751153240 in words is "sixty-six trillion, five hundred thirty-three billion, seven hundred fifty-one million, one hundred fifty-three thousand, two hundred forty".