670265091261 has 6 divisors (see below), whose sum is σ = 968160687390. Its totient is φ = 446843394168.

The previous prime is 670265091229. The next prime is 670265091317. The reversal of 670265091261 is 162190562076.

670265091261 is a `hidden beast` number, since 6 + 70 + 2 + 6 + 509 + 12 + 61 = 666.

It can be written as a sum of positive squares in only one way, i.e., 356401836036 + 313863255225 = 596994^2 + 560235^2 .

It is not a de Polignac number, because 670265091261 - 2⁵ = 670265091229 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (670265095261) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 37236949506 + ... + 37236949523.

It is an arithmetic number, because the mean of its divisors is an integer number (161360114565).

Almost surely, 2^670265091261 is an apocalyptic number.

It is an amenable number.

670265091261 is a deficient number, since it is larger than the sum of its proper divisors (297895596129).

670265091261 is a wasteful number, since it uses less digits than its factorization.

670265091261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74473899035 (or 74473899032 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 45.

The spelling of 670265091261 in words is "six hundred seventy billion, two hundred sixty-five million, ninety-one thousand, two hundred sixty-one".