21942478591683 has 16 divisors (see below), whose sum is σ = 31632675250176. Its totient is φ = 13449266676000.

The previous prime is 21942478591637. The next prime is 21942478591711. The reversal of 21942478591683 is 38619587424912.

It is not a de Polignac number, because 21942478591683 - 2⁶ = 21942478591619 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21942478991683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1120762435 + ... + 1120782012.

It is an arithmetic number, because the mean of its divisors is an integer number (1977042203136).

Almost surely, 2^{21942478591683} is an apocalyptic number.

21942478591683 is a deficient number, since it is larger than the sum of its proper divisors (9690196658493).

21942478591683 is a wasteful number, since it uses less digits than its factorization.

21942478591683 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2241544714.

The product of its digits is 209018880, while the sum is 69.

The spelling of 21942478591683 in words is "twenty-one trillion, nine hundred forty-two billion, four hundred seventy-eight million, five hundred ninety-one thousand, six hundred eighty-three".