2111161264 has 10 divisors (see below), whose sum is σ = 4090374980. Its totient is φ = 1055580624.

The previous prime is 2111161229. The next prime is 2111161267. The reversal of 2111161264 is 4621611112.

It is a super-2 number, since 2×2111161264² = 8914003765228155392, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2111161267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65973774 + ... + 65973805.

It is an arithmetic number, because the mean of its divisors is an integer number (409037498).

Almost surely, 2^2111161264 is an apocalyptic number.

It is an amenable number.

2111161264 is a deficient number, since it is larger than the sum of its proper divisors (1979213716).

2111161264 is a wasteful number, since it uses less digits than its factorization.

2111161264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131947587 (or 131947581 counting only the distinct ones).

The product of its digits is 576, while the sum is 25.

The square root of 2111161264 is about 45947.3749413391. The cubic root of 2111161264 is about 1282.8438689478.

Adding to 2111161264 its reverse (4621611112), we get a palindrome (6732772376).

The spelling of 2111161264 in words is "two billion, one hundred eleven million, one hundred sixty-one thousand, two hundred sixty-four".