990868615941 has 8 divisors (see below), whose sum is σ = 1398873340224. Its totient is φ = 621721484480.

The previous prime is 990868615921. The next prime is 990868615993. The reversal of 990868615941 is 149516868099.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 990868615941 - 2⁷ = 990868615813 is a prime.

It is a super-2 number, since 2×990868615941² (a number of 25 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (990868615921) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9714398145 + ... + 9714398246.

It is an arithmetic number, because the mean of its divisors is an integer number (174859167528).

Almost surely, 2^990868615941 is an apocalyptic number.

It is an amenable number.

990868615941 is a deficient number, since it is larger than the sum of its proper divisors (408004724283).

990868615941 is a wasteful number, since it uses less digits than its factorization.

990868615941 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19428796411.

The product of its (nonzero) digits is 33592320, while the sum is 66.

The spelling of 990868615941 in words is "nine hundred ninety billion, eight hundred sixty-eight million, six hundred fifteen thousand, nine hundred forty-one".