61478211218 has 8 divisors (see below), whose sum is σ = 92360736048. Its totient is φ = 30691299204.

The previous prime is 61478211139. The next prime is 61478211253. The reversal of 61478211218 is 81211287416.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23901596 + ... + 23904167.

It is an arithmetic number, because the mean of its divisors is an integer number (11545092006).

Almost surely, 2^61478211218 is an apocalyptic number.

61478211218 is a deficient number, since it is larger than the sum of its proper divisors (30882524830).

61478211218 is a wasteful number, since it uses less digits than its factorization.

61478211218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47806408.

The product of its digits is 43008, while the sum is 41.

The spelling of 61478211218 in words is "sixty-one billion, four hundred seventy-eight million, two hundred eleven thousand, two hundred eighteen".