66126243450145 has 32 divisors (see below), whose sum is σ = 81097475622912. Its totient is φ = 51750019476672.

The previous prime is 66126243450101. The next prime is 66126243450187. The reversal of 66126243450145 is 54105434262166.

It is a cyclic number.

It is not a de Polignac number, because 66126243450145 - 2¹³ = 66126243441953 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 91246594 + ... + 91968436.

It is an arithmetic number, because the mean of its divisors is an integer number (2534296113216).

Almost surely, 2^{66126243450145} is an apocalyptic number.

It is an amenable number.

66126243450145 is a deficient number, since it is larger than the sum of its proper divisors (14971232172767).

66126243450145 is a wasteful number, since it uses less digits than its factorization.

66126243450145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 724101.

The product of its (nonzero) digits is 4147200, while the sum is 49.

The spelling of 66126243450145 in words is "sixty-six trillion, one hundred twenty-six billion, two hundred forty-three million, four hundred fifty thousand, one hundred forty-five".