21463051067 has 16 divisors (see below), whose sum is σ = 22142989440. Its totient is φ = 20793495552.

The previous prime is 21463051063. The next prime is 21463051069. The reversal of 21463051067 is 76015036412.

It is a cyclic number.

It is not a de Polignac number, because 21463051067 - 2² = 21463051063 is a prime.

It is a super-2 number, since 2×21463051067² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21463051063) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1888859 + ... + 1900187.

It is an arithmetic number, because the mean of its divisors is an integer number (1383936840).

Almost surely, 2^21463051067 is an apocalyptic number.

21463051067 is a deficient number, since it is larger than the sum of its proper divisors (679938373).

21463051067 is a wasteful number, since it uses less digits than its factorization.

21463051067 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11782.

The product of its (nonzero) digits is 30240, while the sum is 35.

Adding to 21463051067 its reverse (76015036412), we get a palindrome (97478087479).

The spelling of 21463051067 in words is "twenty-one billion, four hundred sixty-three million, fifty-one thousand, sixty-seven".