21114628623 has 24 divisors (see below), whose sum is σ = 33546526416. Its totient is φ = 12796737360.

The previous prime is 21114628621. The next prime is 21114628631. The reversal of 21114628623 is 32682641112.

It is a happy number.

21114628623 is a `hidden beast` number, since 2 + 1 + 1 + 1 + 4 + 6 + 28 + 623 = 666.

It is not a de Polignac number, because 21114628623 - 2¹ = 21114628621 is a prime.

It is a super-2 number, since 2×21114628623² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21114628621) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 869340 + ... + 893297.

It is an arithmetic number, because the mean of its divisors is an integer number (1397771934).

Almost surely, 2^21114628623 is an apocalyptic number.

21114628623 is a deficient number, since it is larger than the sum of its proper divisors (12431897793).

21114628623 is a wasteful number, since it uses less digits than its factorization.

21114628623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1762676 (or 1762651 counting only the distinct ones).

The product of its digits is 27648, while the sum is 36.

It can be divided in two parts, 21114628 and 623, that added together give a triangular number (21115251 = T₆₄₉₈).

The spelling of 21114628623 in words is "twenty-one billion, one hundred fourteen million, six hundred twenty-eight thousand, six hundred twenty-three".