21364757044246 has 32 divisors (see below), whose sum is σ = 39955100274432. Its totient is φ = 8323883408160.

The previous prime is 21364757044237. The next prime is 21364757044259. The reversal of 21364757044246 is 64244075746312.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39078145 + ... + 39621091.

It is an arithmetic number, because the mean of its divisors is an integer number (1248596883576).

Almost surely, 2^{21364757044246} is an apocalyptic number.

21364757044246 is a deficient number, since it is larger than the sum of its proper divisors (18590343230186).

21364757044246 is a wasteful number, since it uses less digits than its factorization.

21364757044246 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 798484.

The product of its (nonzero) digits is 27095040, while the sum is 55.

The spelling of 21364757044246 in words is "twenty-one trillion, three hundred sixty-four billion, seven hundred fifty-seven million, forty-four thousand, two hundred forty-six".