961210021440461 has 16 divisors (see below), whose sum is σ = 1040403345609600. Its totient is φ = 882776208500928.

The previous prime is 961210021440433. The next prime is 961210021440491. The reversal of 961210021440461 is 164044120012169.

It is a cyclic number.

It is not a de Polignac number, because 961210021440461 - 2²⁶ = 961209954331597 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (961210021440491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 183388001 + ... + 188556566.

It is an arithmetic number, because the mean of its divisors is an integer number (65025209100600).

Almost surely, 2^{961210021440461} is an apocalyptic number.

It is an amenable number.

961210021440461 is a deficient number, since it is larger than the sum of its proper divisors (79193324169139).

961210021440461 is a wasteful number, since it uses less digits than its factorization.

961210021440461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 371945588.

The product of its (nonzero) digits is 82944, while the sum is 41.

The spelling of 961210021440461 in words is "nine hundred sixty-one trillion, two hundred ten billion, twenty-one million, four hundred forty thousand, four hundred sixty-one".