261629303030 has 16 divisors (see below), whose sum is σ = 473654903184. Its totient is φ = 104046797280.

The previous prime is 261629303029. The next prime is 261629303077. The reversal of 261629303030 is 30303926162.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75613676 + ... + 75617135.

It is an arithmetic number, because the mean of its divisors is an integer number (29603431449).

Almost surely, 2^261629303030 is an apocalyptic number.

261629303030 is a deficient number, since it is larger than the sum of its proper divisors (212025600154).

261629303030 is a wasteful number, since it uses less digits than its factorization.

261629303030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151230991.

The product of its (nonzero) digits is 34992, while the sum is 35.

The spelling of 261629303030 in words is "two hundred sixty-one billion, six hundred twenty-nine million, three hundred three thousand, thirty".