61098909830 has 16 divisors (see below), whose sum is σ = 125689186080. Its totient is φ = 20948197632.

The previous prime is 61098909827. The next prime is 61098909841. The reversal of 61098909830 is 3890989016.

It is an alternating number because its digits alternate between even and odd.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 436420715 + ... + 436420854.

It is an arithmetic number, because the mean of its divisors is an integer number (7855574130).

Almost surely, 2^61098909830 is an apocalyptic number.

61098909830 is an abundant number, since it is smaller than the sum of its proper divisors (64590276250).

61098909830 is a wasteful number, since it uses less digits than its factorization.

61098909830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 872841583.

The product of its (nonzero) digits is 839808, while the sum is 53.

The spelling of 61098909830 in words is "sixty-one billion, ninety-eight million, nine hundred nine thousand, eight hundred thirty".