66557762584053 has 32 divisors (see below), whose sum is σ = 96181981840896. Its totient is φ = 40696413907968.

The previous prime is 66557762583989. The next prime is 66557762584081. The reversal of 66557762584053 is 35048526775566.

It is not a de Polignac number, because 66557762584053 - 2⁶ = 66557762583989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66557762584153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 207636100 + ... + 207956402.

It is an arithmetic number, because the mean of its divisors is an integer number (3005686932528).

Almost surely, 2^{66557762584053} is an apocalyptic number.

It is an amenable number.

66557762584053 is a deficient number, since it is larger than the sum of its proper divisors (29624219256843).

66557762584053 is a wasteful number, since it uses less digits than its factorization.

66557762584053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 354413.

The product of its (nonzero) digits is 1270080000, while the sum is 69.

The spelling of 66557762584053 in words is "sixty-six trillion, five hundred fifty-seven billion, seven hundred sixty-two million, five hundred eighty-four thousand, fifty-three".