61479398418 has 32 divisors (see below), whose sum is σ = 125238381120. Its totient is φ = 20114288640.

The previous prime is 61479398401. The next prime is 61479398423. The reversal of 61479398418 is 81489397416.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 91446 + ... + 362382.

It is an arithmetic number, because the mean of its divisors is an integer number (3913699410).

Almost surely, 2^61479398418 is an apocalyptic number.

61479398418 is an abundant number, since it is smaller than the sum of its proper divisors (63758982702).

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

61479398418 is a wasteful number, since it uses less digits than its factorization.

61479398418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271642.

The product of its digits is 10450944, while the sum is 60.

The spelling of 61479398418 in words is "sixty-one billion, four hundred seventy-nine million, three hundred ninety-eight thousand, four hundred eighteen".