211148458061 has 8 divisors (see below), whose sum is σ = 224168342904. Its totient is φ = 198195171840.

The previous prime is 211148458057. The next prime is 211148458069. The reversal of 211148458061 is 160854841112.

It can be written as a sum of positive squares in 4 ways, for example, as 7549872100 + 203598585961 = 86890^2 + 451219^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 211148458061 - 2² = 211148458057 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211148458069) 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, 16643120 + ... + 16655801.

It is an arithmetic number, because the mean of its divisors is an integer number (28021042863).

Almost surely, 2^211148458061 is an apocalyptic number.

It is an amenable number.

211148458061 is a deficient number, since it is larger than the sum of its proper divisors (13019884843).

211148458061 is a wasteful number, since it uses less digits than its factorization.

211148458061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33299311.

The product of its (nonzero) digits is 61440, while the sum is 41.

The spelling of 211148458061 in words is "two hundred eleven billion, one hundred forty-eight million, four hundred fifty-eight thousand, sixty-one".