1961058786708 has 240 divisors, whose sum is σ = 5440408562176. Its totient is φ = 549649981440.

The previous prime is 1961058786703. The next prime is 1961058786727. The reversal of 1961058786708 is 8076878501691.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1961058786703) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 405929853 + ... + 405934683.

Almost surely, 2^{1961058786708} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1961058786708, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2720204281088).

1961058786708 is an abundant number, since it is smaller than the sum of its proper divisors (3479349775468).

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

1961058786708 is a wasteful number, since it uses less digits than its factorization.

1961058786708 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5132 (or 5109 counting only the distinct ones).

The product of its (nonzero) digits is 40642560, while the sum is 66.

The spelling of 1961058786708 in words is "one trillion, nine hundred sixty-one billion, fifty-eight million, seven hundred eighty-six thousand, seven hundred eight".