21263727107846 has 4 divisors (see below), whose sum is σ = 31895590661772. Its totient is φ = 10631863553922.

The previous prime is 21263727107797. The next prime is 21263727107941. The reversal of 21263727107846 is 64870172736212.

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

It is a junction number, because it is equal to n+sod(n) for n = 21263727107791 and 21263727107800.

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, 5315931776960 + ... + 5315931776963.

It is an arithmetic number, because the mean of its divisors is an integer number (7973897665443).

Almost surely, 2^{21263727107846} is an apocalyptic number.

21263727107846 is a deficient number, since it is larger than the sum of its proper divisors (10631863553926).

21263727107846 is a wasteful number, since it uses less digits than its factorization.

21263727107846 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10631863553925.

The product of its (nonzero) digits is 9483264, while the sum is 56.

The spelling of 21263727107846 in words is "twenty-one trillion, two hundred sixty-three billion, seven hundred twenty-seven million, one hundred seven thousand, eight hundred forty-six".