1961616090280 has 128 divisors (see below), whose sum is σ = 5792332032000. Its totient is φ = 579233168640.

The previous prime is 1961616090257. The next prime is 1961616090289. The reversal of 1961616090280 is 820906161691.

It is a super-2 number, since 2×1961616090280² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1961616090289) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16701700 + ... + 16818739.

It is an arithmetic number, because the mean of its divisors is an integer number (45252594000).

Almost surely, 2^{1961616090280} is an apocalyptic number.

1961616090280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1961616090280 is an abundant number, since it is smaller than the sum of its proper divisors (3830715941720).

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

1961616090280 is a wasteful number, since it uses less digits than its factorization.

1961616090280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33520487 (or 33520483 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 49.

The spelling of 1961616090280 in words is "one trillion, nine hundred sixty-one billion, six hundred sixteen million, ninety thousand, two hundred eighty".