21351156220364 has 6 divisors (see below), whose sum is σ = 37364523385644. Its totient is φ = 10675578110180.

The previous prime is 21351156220363. The next prime is 21351156220423. The reversal of 21351156220364 is 46302265115312.

It is not an unprimeable number, because it can be changed into a prime (21351156220363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2668894527542 + ... + 2668894527549.

It is an arithmetic number, because the mean of its divisors is an integer number (6227420564274).

Almost surely, 2^{21351156220364} is an apocalyptic number.

It is an amenable number.

21351156220364 is a deficient number, since it is larger than the sum of its proper divisors (16013367165280).

21351156220364 is a wasteful number, since it uses less digits than its factorization.

21351156220364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5337789055095 (or 5337789055093 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 41.

The spelling of 21351156220364 in words is "twenty-one trillion, three hundred fifty-one billion, one hundred fifty-six million, two hundred twenty thousand, three hundred sixty-four".