21152166416311 has 12 divisors (see below), whose sum is σ = 24612068660592. Its totient is φ = 18125648227008.

The previous prime is 21152166416299. The next prime is 21152166416357. The reversal of 21152166416311 is 11361466125112.

It is a de Polignac number, because none of the positive numbers 2^k-21152166416311 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21152166410311) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 56718555 + ... + 57090268.

It is an arithmetic number, because the mean of its divisors is an integer number (2051005721716).

Almost surely, 2^{21152166416311} is an apocalyptic number.

21152166416311 is a deficient number, since it is larger than the sum of its proper divisors (3459902244281).

21152166416311 is a wasteful number, since it uses less digits than its factorization.

21152166416311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113812630 (or 113812623 counting only the distinct ones).

The product of its digits is 51840, while the sum is 40.

The spelling of 21152166416311 in words is "twenty-one trillion, one hundred fifty-two billion, one hundred sixty-six million, four hundred sixteen thousand, three hundred eleven".