61218284827 has 8 divisors (see below), whose sum is σ = 69976352736. Its totient is φ = 52463366592.

The previous prime is 61218284819. The next prime is 61218284837. The reversal of 61218284827 is 72848281216.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 61218284827 - 2³ = 61218284819 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61218284837) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 745618 + ... + 823639.

It is an arithmetic number, because the mean of its divisors is an integer number (8747044092).

Almost surely, 2^61218284827 is an apocalyptic number.

61218284827 is a deficient number, since it is larger than the sum of its proper divisors (8758067909).

61218284827 is a wasteful number, since it uses less digits than its factorization.

61218284827 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1574837.

The product of its digits is 688128, while the sum is 49.

The spelling of 61218284827 in words is "sixty-one billion, two hundred eighteen million, two hundred eighty-four thousand, eight hundred twenty-seven".