1265773850828 has 6 divisors (see below), whose sum is σ = 2215104238956. Its totient is φ = 632886925412.

The previous prime is 1265773850777. The next prime is 1265773850903. The reversal of 1265773850828 is 8280583775621.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158221731350 + ... + 158221731357.

It is an arithmetic number, because the mean of its divisors is an integer number (369184039826).

Almost surely, 2^{1265773850828} is an apocalyptic number.

It is an amenable number.

1265773850828 is a deficient number, since it is larger than the sum of its proper divisors (949330388128).

1265773850828 is a wasteful number, since it uses less digits than its factorization.

1265773850828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 316443462711 (or 316443462709 counting only the distinct ones).

The product of its (nonzero) digits is 45158400, while the sum is 62.

The spelling of 1265773850828 in words is "one trillion, two hundred sixty-five billion, seven hundred seventy-three million, eight hundred fifty thousand, eight hundred twenty-eight".