10309743785 has 16 divisors (see below), whose sum is σ = 13546213632. Its totient is φ = 7470316800.

The previous prime is 10309743781. The next prime is 10309743793. The reversal of 10309743785 is 58734790301.

It is not a de Polignac number, because 10309743785 - 2² = 10309743781 is a prime.

It is a super-2 number, since 2×10309743785² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10309743781) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 330944 + ... + 360753.

It is an arithmetic number, because the mean of its divisors is an integer number (846638352).

Almost surely, 2^10309743785 is an apocalyptic number.

It is an amenable number.

10309743785 is a deficient number, since it is larger than the sum of its proper divisors (3236469847).

10309743785 is a wasteful number, since it uses less digits than its factorization.

10309743785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 691984.

The product of its (nonzero) digits is 635040, while the sum is 47.

The spelling of 10309743785 in words is "ten billion, three hundred nine million, seven hundred forty-three thousand, seven hundred eighty-five".