211872603957 has 24 divisors (see below), whose sum is σ = 333523505376. Its totient is φ = 119263038048.

The previous prime is 211872603907. The next prime is 211872604033. The reversal of 211872603957 is 759306278112.

It is not a de Polignac number, because 211872603957 - 2⁷ = 211872603829 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211872603907) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10746198 + ... + 10765895.

It is an arithmetic number, because the mean of its divisors is an integer number (13896812724).

Almost surely, 2^211872603957 is an apocalyptic number.

It is an amenable number.

211872603957 is a deficient number, since it is larger than the sum of its proper divisors (121650901419).

211872603957 is a wasteful number, since it uses less digits than its factorization.

211872603957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21512177 (or 21512170 counting only the distinct ones).

The product of its (nonzero) digits is 1270080, while the sum is 51.

The spelling of 211872603957 in words is "two hundred eleven billion, eight hundred seventy-two million, six hundred three thousand, nine hundred fifty-seven".