919668281050961 has 8 divisors (see below), whose sum is σ = 990480013312104. Its totient is φ = 848866265694720.

The previous prime is 919668281050913. The next prime is 919668281050963. The reversal of 919668281050961 is 169050182866919.

It can be written as a sum of positive squares in 4 ways, for example, as 40480846351936 + 879187434699025 = 6362456^2 + 29651095^2 .

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

It is not a de Polignac number, because 919668281050961 - 2⁴⁶ = 849299536873297 is a prime.

It is a super-3 number, since 3×919668281050961³ (a number of 46 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (919668281050963) 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, 2429029646 + ... + 2429408231.

It is an arithmetic number, because the mean of its divisors is an integer number (123810001664013).

Almost surely, 2^{919668281050961} is an apocalyptic number.

It is an amenable number.

919668281050961 is a deficient number, since it is larger than the sum of its proper divisors (70811732261143).

919668281050961 is a wasteful number, since it uses less digits than its factorization.

919668281050961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4858452451.

The product of its (nonzero) digits is 100776960, while the sum is 71.

The spelling of 919668281050961 in words is "nine hundred nineteen trillion, six hundred sixty-eight billion, two hundred eighty-one million, fifty thousand, nine hundred sixty-one".