61098902198 has 16 divisors (see below), whose sum is σ = 91798660800. Its totient is φ = 30499390656.

The previous prime is 61098902153. The next prime is 61098902251. The reversal of 61098902198 is 89120989016.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3311936 + ... + 3330332.

It is an arithmetic number, because the mean of its divisors is an integer number (5737416300).

Almost surely, 2^61098902198 is an apocalyptic number.

61098902198 is a deficient number, since it is larger than the sum of its proper divisors (30699758602).

61098902198 is a wasteful number, since it uses less digits than its factorization.

61098902198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21031.

The product of its (nonzero) digits is 559872, while the sum is 53.

The spelling of 61098902198 in words is "sixty-one billion, ninety-eight million, nine hundred two thousand, one hundred ninety-eight".