2181156532708 has 24 divisors (see below), whose sum is σ = 3889376900640. Its totient is φ = 1070093069760.

The previous prime is 2181156532601. The next prime is 2181156532729. The reversal of 2181156532708 is 8072356511812.

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, 23338266 + ... + 23431537.

It is an arithmetic number, because the mean of its divisors is an integer number (162057370860).

Almost surely, 2^{2181156532708} is an apocalyptic number.

It is an amenable number.

2181156532708 is a deficient number, since it is larger than the sum of its proper divisors (1708220367932).

2181156532708 is a wasteful number, since it uses less digits than its factorization.

2181156532708 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46770027 (or 46770025 counting only the distinct ones).

The product of its (nonzero) digits is 806400, while the sum is 49.

The spelling of 2181156532708 in words is "two trillion, one hundred eighty-one billion, one hundred fifty-six million, five hundred thirty-two thousand, seven hundred eight".