211317974982 has 32 divisors (see below), whose sum is σ = 469628098560. Its totient is φ = 70434435240.

The previous prime is 211317974953. The next prime is 211317975107. The reversal of 211317974982 is 289479713112.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 696007 + ... + 952397.

It is an arithmetic number, because the mean of its divisors is an integer number (14675878080).

Almost surely, 2^211317974982 is an apocalyptic number.

211317974982 is an abundant number, since it is smaller than the sum of its proper divisors (258310123578).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

211317974982 is a wasteful number, since it uses less digits than its factorization.

211317974982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271665 (or 271659 counting only the distinct ones).

The product of its digits is 1524096, while the sum is 54.

The spelling of 211317974982 in words is "two hundred eleven billion, three hundred seventeen million, nine hundred seventy-four thousand, nine hundred eighty-two".