19806692850005 has 16 divisors (see below), whose sum is σ = 24173962735104. Its totient is φ = 15576979221120.

The previous prime is 19806692849971. The next prime is 19806692850013. The reversal of 19806692850005 is 50005829660891.

It is not a de Polignac number, because 19806692850005 - 2²² = 19806688655701 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 140292941 + ... + 140434050.

It is an arithmetic number, because the mean of its divisors is an integer number (1510872670944).

Almost surely, 2^{19806692850005} is an apocalyptic number.

It is an amenable number.

19806692850005 is a deficient number, since it is larger than the sum of its proper divisors (4367269885099).

19806692850005 is a wasteful number, since it uses less digits than its factorization.

19806692850005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280727236.

The product of its (nonzero) digits is 9331200, while the sum is 59.

The spelling of 19806692850005 in words is "nineteen trillion, eight hundred six billion, six hundred ninety-two million, eight hundred fifty thousand, five".