61804468838 has 16 divisors (see below), whose sum is σ = 105955095840. Its totient is φ = 26486485056.

The previous prime is 61804468787. The next prime is 61804468879. The reversal of 61804468838 is 83886440816.

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, 295448 + ... + 459236.

It is an arithmetic number, because the mean of its divisors is an integer number (6622193490).

Almost surely, 2^61804468838 is an apocalyptic number.

61804468838 is a deficient number, since it is larger than the sum of its proper divisors (44150627002).

61804468838 is a wasteful number, since it uses less digits than its factorization.

61804468838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190751.

The product of its (nonzero) digits is 7077888, while the sum is 56.

The spelling of 61804468838 in words is "sixty-one billion, eight hundred four million, four hundred sixty-eight thousand, eight hundred thirty-eight".