21868855053670 has 16 divisors (see below), whose sum is σ = 39371334258960. Its totient is φ = 8745898652064.

The previous prime is 21868855053649. The next prime is 21868855053761. The reversal of 21868855053670 is 7635055886812.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 205365285 + ... + 205471744.

It is an arithmetic number, because the mean of its divisors is an integer number (2460708391185).

Almost surely, 2^{21868855053670} is an apocalyptic number.

21868855053670 is a deficient number, since it is larger than the sum of its proper divisors (17502479205290).

21868855053670 is a wasteful number, since it uses less digits than its factorization.

21868855053670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 410842359.

The product of its (nonzero) digits is 96768000, while the sum is 64.

The spelling of 21868855053670 in words is "twenty-one trillion, eight hundred sixty-eight billion, eight hundred fifty-five million, fifty-three thousand, six hundred seventy".