2159678984390 has 16 divisors (see below), whose sum is σ = 3925164136608. Its totient is φ = 855484490496.

The previous prime is 2159678984389. The next prime is 2159678984443. The reversal of 2159678984390 is 934898769512.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1048386827 + ... + 1048388886.

It is an arithmetic number, because the mean of its divisors is an integer number (245322758538).

It is a 1-persistent number, because it is pandigital, but 2⋅2159678984390 = 4319357968780 is not.

Almost surely, 2^{2159678984390} is an apocalyptic number.

2159678984390 is a deficient number, since it is larger than the sum of its proper divisors (1765485152218).

2159678984390 is a wasteful number, since it uses less digits than its factorization.

2159678984390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2096775823.

The product of its (nonzero) digits is 235146240, while the sum is 71.

The spelling of 2159678984390 in words is "two trillion, one hundred fifty-nine billion, six hundred seventy-eight million, nine hundred eighty-four thousand, three hundred ninety".