21050613116 has 24 divisors (see below), whose sum is σ = 40952064384. Its totient is φ = 9402258240.

The previous prime is 21050613091. The next prime is 21050613163. The reversal of 21050613116 is 61131605012.

It is a super-2 number, since 2×21050613116² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6527735 + ... + 6530958.

It is an arithmetic number, because the mean of its divisors is an integer number (1706336016).

Almost surely, 2^21050613116 is an apocalyptic number.

21050613116 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

21050613116 is a deficient number, since it is larger than the sum of its proper divisors (19901451268).

21050613116 is a wasteful number, since it uses less digits than its factorization.

21050613116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13058741 (or 13058739 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 26.

The spelling of 21050613116 in words is "twenty-one billion, fifty million, six hundred thirteen thousand, one hundred sixteen".