19978070043 has 64 divisors (see below), whose sum is σ = 29745792000. Its totient is φ = 11881013760.

The previous prime is 19978070039. The next prime is 19978070069. The reversal of 19978070043 is 34007087991.

It is not a de Polignac number, because 19978070043 - 2² = 19978070039 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 19978069974 and 19978070001.

It is not an unprimeable number, because it can be changed into a prime (19978070003) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 11030608 + ... + 11032418.

It is an arithmetic number, because the mean of its divisors is an integer number (464778000).

Almost surely, 2^19978070043 is an apocalyptic number.

19978070043 is a deficient number, since it is larger than the sum of its proper divisors (9767721957).

19978070043 is a wasteful number, since it uses less digits than its factorization.

19978070043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2052.

The product of its (nonzero) digits is 381024, while the sum is 48.

The spelling of 19978070043 in words is "nineteen billion, nine hundred seventy-eight million, seventy thousand, forty-three".