99763420081 has 16 divisors (see below), whose sum is σ = 108012352000. Its totient is φ = 91596909888.

The previous prime is 99763420079. The next prime is 99763420121. The reversal of 99763420081 is 18002436799.

It is a cyclic number.

It is not a de Polignac number, because 99763420081 - 2¹ = 99763420079 is a prime.

It is a super-2 number, since 2×99763420081² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99763420481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14605375 + ... + 14612203.

It is an arithmetic number, because the mean of its divisors is an integer number (6750772000).

Almost surely, 2^99763420081 is an apocalyptic number.

It is an amenable number.

99763420081 is a deficient number, since it is larger than the sum of its proper divisors (8248931919).

99763420081 is a wasteful number, since it uses less digits than its factorization.

99763420081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12688.

The product of its (nonzero) digits is 653184, while the sum is 49.

The spelling of 99763420081 in words is "ninety-nine billion, seven hundred sixty-three million, four hundred twenty thousand, eighty-one".