961609069758 has 64 divisors (see below), whose sum is σ = 1949895327744. Its totient is φ = 316117788000.

The previous prime is 961609069723. The next prime is 961609069777. The reversal of 961609069758 is 857960906169.

It is a happy number.

It is a super-2 number, since 2×961609069758² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 371133043 + ... + 371135633.

It is an arithmetic number, because the mean of its divisors is an integer number (30467114496).

Almost surely, 2^961609069758 is an apocalyptic number.

961609069758 is an abundant number, since it is smaller than the sum of its proper divisors (988286257986).

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

961609069758 is a wasteful number, since it uses less digits than its factorization.

961609069758 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4941.

The product of its (nonzero) digits is 44089920, while the sum is 66.

The spelling of 961609069758 in words is "nine hundred sixty-one billion, six hundred nine million, sixty-nine thousand, seven hundred fifty-eight".