66135206141351 has 4 divisors (see below), whose sum is σ = 69616006464600. Its totient is φ = 62654405818104.

The previous prime is 66135206141287. The next prime is 66135206141359. The reversal of 66135206141351 is 15314160253166.

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

It is not a de Polignac number, because 66135206141351 - 2⁶ = 66135206141287 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 (66135206141359) 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, 1740400161596 + ... + 1740400161633.

It is an arithmetic number, because the mean of its divisors is an integer number (17404001616150).

Almost surely, 2^{66135206141351} is an apocalyptic number.

66135206141351 is a deficient number, since it is larger than the sum of its proper divisors (3480800323249).

66135206141351 is a wasteful number, since it uses less digits than its factorization.

66135206141351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3480800323248.

The product of its (nonzero) digits is 388800, while the sum is 44.

The spelling of 66135206141351 in words is "sixty-six trillion, one hundred thirty-five billion, two hundred six million, one hundred forty-one thousand, three hundred fifty-one".