61908487198 has 8 divisors (see below), whose sum is σ = 93101453640. Its totient is φ = 30874669320.

The previous prime is 61908487183. The next prime is 61908487217. The reversal of 61908487198 is 89178480916.

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

It is a congruent number.

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, 39786168 + ... + 39787723.

It is an arithmetic number, because the mean of its divisors is an integer number (11637681705).

Almost surely, 2^61908487198 is an apocalyptic number.

61908487198 is a deficient number, since it is larger than the sum of its proper divisors (31192966442).

61908487198 is a wasteful number, since it uses less digits than its factorization.

61908487198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79574282.

The product of its (nonzero) digits is 6967296, while the sum is 61.

The spelling of 61908487198 in words is "sixty-one billion, nine hundred eight million, four hundred eighty-seven thousand, one hundred ninety-eight".