1009779794751 has 32 divisors (see below), whose sum is σ = 1729121264640. Its totient is φ = 509473223424.

The previous prime is 1009779794743. The next prime is 1009779794773. The reversal of 1009779794751 is 1574979779001.

It is not a de Polignac number, because 1009779794751 - 2³ = 1009779794743 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1009779794351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 80403006 + ... + 80415563.

It is an arithmetic number, because the mean of its divisors is an integer number (54035039520).

Almost surely, 2^{1009779794751} is an apocalyptic number.

1009779794751 is a deficient number, since it is larger than the sum of its proper divisors (719341469889).

1009779794751 is a wasteful number, since it uses less digits than its factorization.

1009779794751 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160818615.

The product of its (nonzero) digits is 35006580, while the sum is 66.

The spelling of 1009779794751 in words is "one trillion, nine billion, seven hundred seventy-nine million, seven hundred ninety-four thousand, seven hundred fifty-one".