101563085890 has 64 divisors (see below), whose sum is σ = 226364523264. Its totient is φ = 32011112448.

The previous prime is 101563085863. The next prime is 101563085959. The reversal of 101563085890 is 98580365101.

It is a self number, because there is not a number n which added to its sum of digits gives 101563085890.

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 31 ways as a sum of consecutive naturals, for example, 941239 + ... + 1043578.

It is an arithmetic number, because the mean of its divisors is an integer number (3536945676).

Almost surely, 2^101563085890 is an apocalyptic number.

101563085890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

101563085890 is an abundant number, since it is smaller than the sum of its proper divisors (124801437374).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

101563085890 is a wasteful number, since it uses less digits than its factorization.

101563085890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1984891.

The product of its (nonzero) digits is 259200, while the sum is 46.

The spelling of 101563085890 in words is "one hundred one billion, five hundred sixty-three million, eighty-five thousand, eight hundred ninety".