21477314242246 has 16 divisors (see below), whose sum is σ = 33701342539104. Its totient is φ = 10245885528384.

The previous prime is 21477314242243. The next prime is 21477314242271. The reversal of 21477314242246 is 64224241377412.

It is a super-2 number, since 2×21477314242246² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21477314242246.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21477314242243) 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 7 ways as a sum of consecutive naturals, for example, 588014655 + ... + 588051178.

It is an arithmetic number, because the mean of its divisors is an integer number (2106333908694).

Almost surely, 2^{21477314242246} is an apocalyptic number.

21477314242246 is a deficient number, since it is larger than the sum of its proper divisors (12224028296858).

21477314242246 is a wasteful number, since it uses less digits than its factorization.

21477314242246 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1176066255.

The product of its digits is 3612672, while the sum is 49.

The spelling of 21477314242246 in words is "twenty-one trillion, four hundred seventy-seven billion, three hundred fourteen million, two hundred forty-two thousand, two hundred forty-six".