19907702143 has 8 divisors (see below), whose sum is σ = 23949115520. Its totient is φ = 16165652760.

The previous prime is 19907702119. The next prime is 19907702147. The reversal of 19907702143 is 34120770991.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19907702143 is a prime.

It is a super-2 number, since 2×19907702143² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 19907702143.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19907702147) 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, 74840853 + ... + 74841118.

It is an arithmetic number, because the mean of its divisors is an integer number (2993639440).

Almost surely, 2^19907702143 is an apocalyptic number.

19907702143 is a deficient number, since it is larger than the sum of its proper divisors (4041413377).

19907702143 is a wasteful number, since it uses less digits than its factorization.

19907702143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149681997.

The product of its (nonzero) digits is 95256, while the sum is 43.

The spelling of 19907702143 in words is "nineteen billion, nine hundred seven million, seven hundred two thousand, one hundred forty-three".