890783019661 has 16 divisors (see below), whose sum is σ = 930726858240. Its totient is φ = 850940947120.

The previous prime is 890783019653. The next prime is 890783019673. The reversal of 890783019661 is 166910387098.

It is a cyclic number.

It is not a de Polignac number, because 890783019661 - 2³ = 890783019653 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 890783019596 and 890783019605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (890783019361) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 140876646 + ... + 140882968.

It is an arithmetic number, because the mean of its divisors is an integer number (58170428640).

Almost surely, 2^890783019661 is an apocalyptic number.

It is an amenable number.

890783019661 is a deficient number, since it is larger than the sum of its proper divisors (39943838579).

890783019661 is a wasteful number, since it uses less digits than its factorization.

890783019661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13376.

The product of its (nonzero) digits is 3919104, while the sum is 58.

The spelling of 890783019661 in words is "eight hundred ninety billion, seven hundred eighty-three million, nineteen thousand, six hundred sixty-one".