19706099081 has 8 divisors (see below), whose sum is σ = 19847707200. Its totient is φ = 19564841520.

The previous prime is 19706099059. The next prime is 19706099087. The reversal of 19706099081 is 18099060791.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 19706099081 - 2²² = 19701904777 is a prime.

It is a super-2 number, since 2×19706099081² (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 (19706099087) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25715 + ... + 200183.

It is an arithmetic number, because the mean of its divisors is an integer number (2480963400).

Almost surely, 2^19706099081 is an apocalyptic number.

It is an amenable number.

19706099081 is a deficient number, since it is larger than the sum of its proper divisors (141608119).

19706099081 is a wasteful number, since it uses less digits than its factorization.

19706099081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175279.

The product of its (nonzero) digits is 244944, while the sum is 50.

The spelling of 19706099081 in words is "nineteen billion, seven hundred six million, ninety-nine thousand, eighty-one".