2211666155436 has 24 divisors (see below), whose sum is σ = 5161295910064. Its totient is φ = 737116116480.

The previous prime is 2211666155429. The next prime is 2211666155443. The reversal of 2211666155436 is 6345516661122.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2211666155429) and next prime (2211666155443).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13154905 + ... + 13321968.

Almost surely, 2^{2211666155436} is an apocalyptic number.

It is an amenable number.

2211666155436 is an abundant number, since it is smaller than the sum of its proper divisors (2949629754628).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2211666155436 is a wasteful number, since it uses less digits than its factorization.

2211666155436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26483841 (or 26483839 counting only the distinct ones).

The product of its digits is 1555200, while the sum is 48.

The spelling of 2211666155436 in words is "two trillion, two hundred eleven billion, six hundred sixty-six million, one hundred fifty-five thousand, four hundred thirty-six".