66106454253 has 16 divisors (see below), whose sum is σ = 100738331136. Its totient is φ = 37773359280.

The previous prime is 66106454251. The next prime is 66106454321. The reversal of 66106454253 is 35245460166.

It is not a de Polignac number, because 66106454253 - 2¹ = 66106454251 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66106454251) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 489450 + ... + 609732.

It is an arithmetic number, because the mean of its divisors is an integer number (6296145696).

Almost surely, 2^66106454253 is an apocalyptic number.

It is an amenable number.

66106454253 is a deficient number, since it is larger than the sum of its proper divisors (34631876883).

66106454253 is a wasteful number, since it uses less digits than its factorization.

66106454253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146464.

The product of its (nonzero) digits is 518400, while the sum is 42.

The spelling of 66106454253 in words is "sixty-six billion, one hundred six million, four hundred fifty-four thousand, two hundred fifty-three".