990601111601101 has 48 divisors (see below), whose sum is σ = 1353879661155840. Its totient is φ = 712472317441920.

The previous prime is 990601111601051. The next prime is 990601111601137. The reversal of 990601111601101 is 101106111106099.

It is not a de Polignac number, because 990601111601101 - 2¹⁵ = 990601111568333 is a prime.

It is a super-3 number, since 3×990601111601101³ (a number of 46 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (990601111601201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 99506395 + ... + 109007911.

It is an arithmetic number, because the mean of its divisors is an integer number (28205826274080).

Almost surely, 2^{990601111601101} is an apocalyptic number.

990601111601101 is a gapful number since it is divisible by the number (91) formed by its first and last digit.

It is an amenable number.

990601111601101 is a deficient number, since it is larger than the sum of its proper divisors (363278549554739).

990601111601101 is a wasteful number, since it uses less digits than its factorization.

990601111601101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9516434 (or 9516427 counting only the distinct ones).

The product of its (nonzero) digits is 2916, while the sum is 37.

The spelling of 990601111601101 in words is "nine hundred ninety trillion, six hundred one billion, one hundred eleven million, six hundred one thousand, one hundred one".