8381357555 has 16 divisors (see below), whose sum is σ = 10312178688. Its totient is φ = 6535680000.

The previous prime is 8381357533. The next prime is 8381357557. The reversal of 8381357555 is 5557531838.

It is a de Polignac number, because none of the positive numbers 2^k-8381357555 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8381357557) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 218195 + ... + 253715.

It is an arithmetic number, because the mean of its divisors is an integer number (644511168).

Almost surely, 2^8381357555 is an apocalyptic number.

8381357555 is a deficient number, since it is larger than the sum of its proper divisors (1930821133).

8381357555 is a wasteful number, since it uses less digits than its factorization.

8381357555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36718.

The product of its digits is 2520000, while the sum is 50.

The square root of 8381357555 is about 91549.7545327130. The cubic root of 8381357555 is about 2031.2877812554.

The spelling of 8381357555 in words is "eight billion, three hundred eighty-one million, three hundred fifty-seven thousand, five hundred fifty-five".