21255456062 has 8 divisors (see below), whose sum is σ = 32561549856. Its totient is φ = 10401606112.

The previous prime is 21255456059. The next prime is 21255456083. The reversal of 21255456062 is 26065455212.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×21255456062² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 113060843 + ... + 113061030.

It is an arithmetic number, because the mean of its divisors is an integer number (4070193732).

Almost surely, 2^21255456062 is an apocalyptic number.

21255456062 is a deficient number, since it is larger than the sum of its proper divisors (11306093794).

21255456062 is a wasteful number, since it uses less digits than its factorization.

21255456062 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226121922.

The product of its (nonzero) digits is 144000, while the sum is 38.

The spelling of 21255456062 in words is "twenty-one billion, two hundred fifty-five million, four hundred fifty-six thousand, sixty-two".