211056979579 has 4 divisors (see below), whose sum is σ = 211058382184. Its totient is φ = 211055576976.

The previous prime is 211056979561. The next prime is 211056979589. The reversal of 211056979579 is 975979650112.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 211056979579 - 2⁵ = 211056979547 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211056979559) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 444162 + ... + 787015.

It is an arithmetic number, because the mean of its divisors is an integer number (52764595546).

Almost surely, 2^211056979579 is an apocalyptic number.

211056979579 is a deficient number, since it is larger than the sum of its proper divisors (1402605).

211056979579 is a wasteful number, since it uses less digits than its factorization.

211056979579 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1402604.

The product of its (nonzero) digits is 10716300, while the sum is 61.

The spelling of 211056979579 in words is "two hundred eleven billion, fifty-six million, nine hundred seventy-nine thousand, five hundred seventy-nine".