21267735520086 has 48 divisors (see below), whose sum is σ = 50418359950608. Its totient is φ = 6425644377600.

The previous prime is 21267735520051. The next prime is 21267735520091. The reversal of 21267735520086 is 68002553776212.

21267735520086 is a `hidden beast` number, since 2 + 1 + 2 + 6 + 7 + 7 + 3 + 552 + 0 + 0 + 86 = 666.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 159299455 + ... + 159432906.

It is an arithmetic number, because the mean of its divisors is an integer number (1050382498971).

Almost surely, 2^{21267735520086} is an apocalyptic number.

21267735520086 is an abundant number, since it is smaller than the sum of its proper divisors (29150624430522).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21267735520086 is a wasteful number, since it uses less digits than its factorization.

21267735520086 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318732717 (or 318732714 counting only the distinct ones).

The product of its (nonzero) digits is 8467200, while the sum is 54.

The spelling of 21267735520086 in words is "twenty-one trillion, two hundred sixty-seven billion, seven hundred thirty-five million, five hundred twenty thousand, eighty-six".