21111626053 has 8 divisors (see below), whose sum is σ = 24154064640. Its totient is φ = 18075810480.

The previous prime is 21111626017. The next prime is 21111626059. The reversal of 21111626053 is 35062611112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-21111626053 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21111626059) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1648918 + ... + 1661671.

It is an arithmetic number, because the mean of its divisors is an integer number (3019258080).

Almost surely, 2^21111626053 is an apocalyptic number.

It is an amenable number.

21111626053 is a deficient number, since it is larger than the sum of its proper divisors (3042438587).

21111626053 is an equidigital number, since it uses as much as digits as its factorization.

21111626053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3311507.

The product of its (nonzero) digits is 2160, while the sum is 28.

It can be divided in two parts, 211116 and 26053, that added together give a square (237169 = 487²).

The spelling of 21111626053 in words is "twenty-one billion, one hundred eleven million, six hundred twenty-six thousand, fifty-three".