211195136690 has 32 divisors (see below), whose sum is σ = 405795277440. Its totient is φ = 78904627200.

The previous prime is 211195136683. The next prime is 211195136693. The reversal of 211195136690 is 96631591112.

It is a super-2 number, since 2×211195136690² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (211195136693) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7814351 + ... + 7841330.

It is an arithmetic number, because the mean of its divisors is an integer number (12681102420).

Almost surely, 2^211195136690 is an apocalyptic number.

211195136690 is a deficient number, since it is larger than the sum of its proper divisors (194600140750).

211195136690 is a wasteful number, since it uses less digits than its factorization.

211195136690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15655778.

The product of its (nonzero) digits is 87480, while the sum is 44.

The spelling of 211195136690 in words is "two hundred eleven billion, one hundred ninety-five million, one hundred thirty-six thousand, six hundred ninety".