21586127026 has 32 divisors (see below), whose sum is σ = 35928292608. Its totient is φ = 9674734080.

The previous prime is 21586127011. The next prime is 21586127051. The reversal of 21586127026 is 62072168512.

It is a super-3 number, since 3×21586127026³ (a number of 32 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21586127026.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 122971 + ... + 241441.

It is an arithmetic number, because the mean of its divisors is an integer number (1122759144).

Almost surely, 2^21586127026 is an apocalyptic number.

21586127026 is a deficient number, since it is larger than the sum of its proper divisors (14342165582).

21586127026 is a wasteful number, since it uses less digits than its factorization.

21586127026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118746.

The product of its (nonzero) digits is 80640, while the sum is 40.

The spelling of 21586127026 in words is "twenty-one billion, five hundred eighty-six million, one hundred twenty-seven thousand, twenty-six".