66954087275 has 12 divisors (see below), whose sum is σ = 83028570504. Its totient is φ = 53559720000.

The previous prime is 66954087253. The next prime is 66954087287. The reversal of 66954087275 is 57278045966.

It is not a de Polignac number, because 66954087275 - 2¹⁴ = 66954070891 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 335855 + ... + 496695.

It is an arithmetic number, because the mean of its divisors is an integer number (6919047542).

Almost surely, 2^66954087275 is an apocalyptic number.

66954087275 is a deficient number, since it is larger than the sum of its proper divisors (16074483229).

66954087275 is a wasteful number, since it uses less digits than its factorization.

66954087275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177502 (or 177497 counting only the distinct ones).

The product of its (nonzero) digits is 25401600, while the sum is 59.

The spelling of 66954087275 in words is "sixty-six billion, nine hundred fifty-four million, eighty-seven thousand, two hundred seventy-five".