1351166521207 has 8 divisors (see below), whose sum is σ = 1360828156032. Its totient is φ = 1341514275000.

The previous prime is 1351166521181. The next prime is 1351166521213. The reversal of 1351166521207 is 7021256611531.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1351166521207 - 2¹¹ = 1351166519159 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1351166521207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1351166521267) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2058169 + ... + 2634082.

It is an arithmetic number, because the mean of its divisors is an integer number (170103519504).

Almost surely, 2^{1351166521207} is an apocalyptic number.

1351166521207 is a deficient number, since it is larger than the sum of its proper divisors (9661634825).

1351166521207 is a wasteful number, since it uses less digits than its factorization.

1351166521207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4694309.

The product of its (nonzero) digits is 75600, while the sum is 40.

The spelling of 1351166521207 in words is "one trillion, three hundred fifty-one billion, one hundred sixty-six million, five hundred twenty-one thousand, two hundred seven".