61238468838 has 16 divisors (see below), whose sum is σ = 123111535536. Its totient is φ = 20307056640.

The previous prime is 61238468827. The next prime is 61238468839. The reversal of 61238468838 is 83886483216.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61238468839) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26440323 + ... + 26442638.

It is an arithmetic number, because the mean of its divisors is an integer number (7694470971).

Almost surely, 2^61238468838 is an apocalyptic number.

61238468838 is an abundant number, since it is smaller than the sum of its proper divisors (61873066698).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61238468838 is a wasteful number, since it uses less digits than its factorization.

61238468838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52883159.

The product of its digits is 10616832, while the sum is 57.

The spelling of 61238468838 in words is "sixty-one billion, two hundred thirty-eight million, four hundred sixty-eight thousand, eight hundred thirty-eight".