21112614534 has 64 divisors (see below), whose sum is σ = 48809952000. Its totient is φ = 6016926720.

The previous prime is 21112614463. The next prime is 21112614547. The reversal of 21112614534 is 43541621112.

It is a super-2 number, since 2×21112614534² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1675602 + ... + 1688154.

It is an arithmetic number, because the mean of its divisors is an integer number (762655500).

Almost surely, 2^21112614534 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21112614534, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24404976000).

21112614534 is an abundant number, since it is smaller than the sum of its proper divisors (27697337466).

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

21112614534 is a wasteful number, since it uses less digits than its factorization.

21112614534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14085.

The product of its digits is 5760, while the sum is 30.

The spelling of 21112614534 in words is "twenty-one billion, one hundred twelve million, six hundred fourteen thousand, five hundred thirty-four".