211996415487 has 16 divisors (see below), whose sum is σ = 292964730080. Its totient is φ = 136249610112.

The previous prime is 211996415447. The next prime is 211996415503. The reversal of 211996415487 is 784514699112.

It is not a de Polignac number, because 211996415487 - 2⁸ = 211996415231 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 (211996415447) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8748808 + ... + 8773005.

It is an arithmetic number, because the mean of its divisors is an integer number (18310295630).

Almost surely, 2^211996415487 is an apocalyptic number.

211996415487 is a deficient number, since it is larger than the sum of its proper divisors (80968314593).

211996415487 is a wasteful number, since it uses less digits than its factorization.

211996415487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17521962.

The product of its digits is 4354560, while the sum is 57.

The spelling of 211996415487 in words is "two hundred eleven billion, nine hundred ninety-six million, four hundred fifteen thousand, four hundred eighty-seven".