211532490757 has 4 divisors (see below), whose sum is σ = 241751418016. Its totient is φ = 181313563500.

The previous prime is 211532490749. The next prime is 211532490761. The reversal of 211532490757 is 757094235112.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 211532490757 - 2³ = 211532490749 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 (211532490157) 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, 15109463619 + ... + 15109463632.

It is an arithmetic number, because the mean of its divisors is an integer number (60437854504).

Almost surely, 2^211532490757 is an apocalyptic number.

It is an amenable number.

211532490757 is a deficient number, since it is larger than the sum of its proper divisors (30218927259).

211532490757 is an equidigital number, since it uses as much as digits as its factorization.

211532490757 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30218927258.

The product of its (nonzero) digits is 529200, while the sum is 46.

The spelling of 211532490757 in words is "two hundred eleven billion, five hundred thirty-two million, four hundred ninety thousand, seven hundred fifty-seven".