19685956444707 has 16 divisors (see below), whose sum is σ = 30359065363200. Its totient is φ = 11113586425632.

The previous prime is 19685956444697. The next prime is 19685956444711. The reversal of 19685956444707 is 70744465958691.

It is not a de Polignac number, because 19685956444707 - 2⁷ = 19685956444579 is a prime.

It is a super-2 number, since 2×19685956444707² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (19685956443707) 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, 5647145832 + ... + 5647149317.

It is an arithmetic number, because the mean of its divisors is an integer number (1897441585200).

Almost surely, 2^{19685956444707} is an apocalyptic number.

19685956444707 is a deficient number, since it is larger than the sum of its proper divisors (10673108918493).

19685956444707 is a wasteful number, since it uses less digits than its factorization.

19685956444707 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11294295242.

The product of its (nonzero) digits is 1828915200, while the sum is 75.

The spelling of 19685956444707 in words is "nineteen trillion, six hundred eighty-five billion, nine hundred fifty-six million, four hundred forty-four thousand, seven hundred seven".