21766270053 has 32 divisors (see below), whose sum is σ = 32560041600. Its totient is φ = 12817647360.

The previous prime is 21766270051. The next prime is 21766270103. The reversal of 21766270053 is 35007266712.

It is not a de Polignac number, because 21766270053 - 2¹ = 21766270051 is a prime.

It is a super-3 number, since 3×21766270053³ (a number of 32 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21766269993 and 21766270020.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21766270051) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 912523 + ... + 936071.

It is an arithmetic number, because the mean of its divisors is an integer number (1017501300).

Almost surely, 2^21766270053 is an apocalyptic number.

It is an amenable number.

21766270053 is a deficient number, since it is larger than the sum of its proper divisors (10793771547).

21766270053 is a wasteful number, since it uses less digits than its factorization.

21766270053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24357.

The product of its (nonzero) digits is 105840, while the sum is 39.

The spelling of 21766270053 in words is "twenty-one billion, seven hundred sixty-six million, two hundred seventy thousand, fifty-three".