21494916911086 has 4 divisors (see below), whose sum is σ = 32242375366632. Its totient is φ = 10747458455542.

The previous prime is 21494916911053. The next prime is 21494916911131. The reversal of 21494916911086 is 68011961949412.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5373729227770 + ... + 5373729227773.

It is an arithmetic number, because the mean of its divisors is an integer number (8060593841658).

Almost surely, 2^{21494916911086} is an apocalyptic number.

21494916911086 is a deficient number, since it is larger than the sum of its proper divisors (10747458455546).

21494916911086 is a wasteful number, since it uses less digits than its factorization.

21494916911086 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10747458455545.

The product of its (nonzero) digits is 6718464, while the sum is 61.

The spelling of 21494916911086 in words is "twenty-one trillion, four hundred ninety-four billion, nine hundred sixteen million, nine hundred eleven thousand, eighty-six".