66155012757403 has 8 divisors (see below), whose sum is σ = 66604840779600. Its totient is φ = 65706076368288.

The previous prime is 66155012757341. The next prime is 66155012757419. The reversal of 66155012757403 is 30475721055166.

66155012757403 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 66155012757403 - 2⁹ = 66155012756891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66155012757103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 222759376 + ... + 223056157.

It is an arithmetic number, because the mean of its divisors is an integer number (8325605097450).

Almost surely, 2^{66155012757403} is an apocalyptic number.

66155012757403 is a deficient number, since it is larger than the sum of its proper divisors (449828022197).

66155012757403 is a wasteful number, since it uses less digits than its factorization.

66155012757403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 445816541.

The product of its (nonzero) digits is 5292000, while the sum is 52.

The spelling of 66155012757403 in words is "sixty-six trillion, one hundred fifty-five billion, twelve million, seven hundred fifty-seven thousand, four hundred three".