8133818617550 has 48 divisors (see below), whose sum is σ = 15138440555472. Its totient is φ = 3251477011200.

The previous prime is 8133818617549. The next prime is 8133818617567. The reversal of 8133818617550 is 557168183318.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1001327789 + ... + 1001335911.

It is an arithmetic number, because the mean of its divisors is an integer number (315384178239).

Almost surely, 2^{8133818617550} is an apocalyptic number.

8133818617550 is a deficient number, since it is larger than the sum of its proper divisors (7004621937922).

8133818617550 is a wasteful number, since it uses less digits than its factorization.

8133818617550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18293 (or 18288 counting only the distinct ones).

The product of its (nonzero) digits is 4838400, while the sum is 56.

The spelling of 8133818617550 in words is "eight trillion, one hundred thirty-three billion, eight hundred eighteen million, six hundred seventeen thousand, five hundred fifty".