785379726009 has 24 divisors (see below), whose sum is σ = 1142329240832. Its totient is φ = 519947981280.

The previous prime is 785379725957. The next prime is 785379726017. The reversal of 785379726009 is 900627973587.

785379726009 is a `hidden beast` number, since 7 + 8 + 537 + 97 + 2 + 6 + 0 + 0 + 9 = 666.

It is not a de Polignac number, because 785379726009 - 2¹⁶ = 785379660473 is a prime.

It is a super-2 number, since 2×785379726009² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (785379796009) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2273304 + ... + 2595894.

Almost surely, 2^785379726009 is an apocalyptic number.

It is an amenable number.

785379726009 is a deficient number, since it is larger than the sum of its proper divisors (356949514823).

785379726009 is a wasteful number, since it uses less digits than its factorization.

785379726009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324477 (or 324474 counting only the distinct ones).

The product of its (nonzero) digits is 40007520, while the sum is 63.

The spelling of 785379726009 in words is "seven hundred eighty-five billion, three hundred seventy-nine million, seven hundred twenty-six thousand, nine".