66070260610477 has 4 divisors (see below), whose sum is σ = 66090203342620. Its totient is φ = 66050317878336.

The previous prime is 66070260610463. The next prime is 66070260610499. The reversal of 66070260610477 is 77401606207066.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 40412733124201 + 25657527486276 = 6357101^2 + 5065326^2 .

It is a cyclic number.

It is not a de Polignac number, because 66070260610477 - 2¹⁵ = 66070260577709 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66070260610427) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9971361102 + ... + 9971367727.

It is an arithmetic number, because the mean of its divisors is an integer number (16522550835655).

Almost surely, 2^{66070260610477} is an apocalyptic number.

It is an amenable number.

66070260610477 is a deficient number, since it is larger than the sum of its proper divisors (19942732143).

66070260610477 is a wasteful number, since it uses less digits than its factorization.

66070260610477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19942732142.

The product of its (nonzero) digits is 3556224, while the sum is 52.

The spelling of 66070260610477 in words is "sixty-six trillion, seventy billion, two hundred sixty million, six hundred ten thousand, four hundred seventy-seven".