961802726399 has 4 divisors (see below), whose sum is σ = 961810175760. Its totient is φ = 961795277040.

The previous prime is 961802726387. The next prime is 961802726419. The reversal of 961802726399 is 993627208169.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 961802726399 - 2²⁸ = 961534290943 is a prime.

It is a super-3 number, since 3×961802726399³ (a number of 37 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (961802756399) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3527534 + ... + 3790395.

It is an arithmetic number, because the mean of its divisors is an integer number (240452543940).

Almost surely, 2^961802726399 is an apocalyptic number.

961802726399 is a deficient number, since it is larger than the sum of its proper divisors (7449361).

961802726399 is a wasteful number, since it uses less digits than its factorization.

961802726399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7449360.

The product of its (nonzero) digits is 17635968, while the sum is 62.

The spelling of 961802726399 in words is "nine hundred sixty-one billion, eight hundred two million, seven hundred twenty-six thousand, three hundred ninety-nine".