1245791134689 has 16 divisors (see below), whose sum is σ = 1733643620352. Its totient is φ = 794248411088.

The previous prime is 1245791134663. The next prime is 1245791134727. The reversal of 1245791134689 is 9864311975421.

It is a cyclic number.

It is not a de Polignac number, because 1245791134689 - 2¹² = 1245791130593 is a prime.

It is a super-2 number, since 2×1245791134689² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1245791138689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1595007 + ... + 2244020.

It is an arithmetic number, because the mean of its divisors is an integer number (108352726272).

Almost surely, 2^{1245791134689} is an apocalyptic number.

It is an amenable number.

1245791134689 is a deficient number, since it is larger than the sum of its proper divisors (487852485663).

1245791134689 is a wasteful number, since it uses less digits than its factorization.

1245791134689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3843756.

The product of its digits is 13063680, while the sum is 60.

The spelling of 1245791134689 in words is "one trillion, two hundred forty-five billion, seven hundred ninety-one million, one hundred thirty-four thousand, six hundred eighty-nine".