1265670678511 has 8 divisors (see below), whose sum is σ = 1340164514304. Its totient is φ = 1191181578240.

The previous prime is 1265670678497. The next prime is 1265670678521. The reversal of 1265670678511 is 1158760765621.

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 1265670678511 - 2⁷ = 1265670678383 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 (1265670678521) 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, 626095 + ... + 1709776.

It is an arithmetic number, because the mean of its divisors is an integer number (167520564288).

Almost surely, 2^{1265670678511} is an apocalyptic number.

1265670678511 is a deficient number, since it is larger than the sum of its proper divisors (74493835793).

1265670678511 is a wasteful number, since it uses less digits than its factorization.

1265670678511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2367761.

The product of its (nonzero) digits is 4233600, while the sum is 55.

The spelling of 1265670678511 in words is "one trillion, two hundred sixty-five billion, six hundred seventy million, six hundred seventy-eight thousand, five hundred eleven".