2115573812 has 24 divisors (see below), whose sum is σ = 4041724512. Its totient is φ = 960933600.

The previous prime is 2115573781. The next prime is 2115573839. The reversal of 2115573812 is 2183755112.

It is a super-2 number, since 2×2115573812² = 8951305108040422688, which contains 22 as substring.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is a congruent number.

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, 47387 + ... + 80477.

It is an arithmetic number, because the mean of its divisors is an integer number (168405188).

Almost surely, 2^2115573812 is an apocalyptic number.

2115573812 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

2115573812 is a deficient number, since it is larger than the sum of its proper divisors (1926150700).

2115573812 is a wasteful number, since it uses less digits than its factorization.

2115573812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34559 (or 34557 counting only the distinct ones).

The product of its digits is 16800, while the sum is 35.

The square root of 2115573812 is about 45995.3672884563. The cubic root of 2115573812 is about 1283.7370063033.

The spelling of 2115573812 in words is "two billion, one hundred fifteen million, five hundred seventy-three thousand, eight hundred twelve".