21477627311 has 8 divisors (see below), whose sum is σ = 24948251424. Its totient is φ = 18107601120.

The previous prime is 21477627293. The next prime is 21477627319. The reversal of 21477627311 is 11372677412.

It is a happy number.

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-21477627311 is a prime.

It is a super-2 number, since 2×21477627311² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a zygodrome in base 4.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21477627319) 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, 25149020 + ... + 25149873.

It is an arithmetic number, because the mean of its divisors is an integer number (3118531428).

Almost surely, 2^21477627311 is an apocalyptic number.

21477627311 is a deficient number, since it is larger than the sum of its proper divisors (3470624113).

21477627311 is an equidigital number, since it uses as much as digits as its factorization.

21477627311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50298961.

The product of its digits is 98784, while the sum is 41.

The spelling of 21477627311 in words is "twenty-one billion, four hundred seventy-seven million, six hundred twenty-seven thousand, three hundred eleven".