7561966890140 has 24 divisors (see below), whose sum is σ = 17101678967520. Its totient is φ = 2792110851648.

The previous prime is 7561966890139. The next prime is 7561966890169. The reversal of 7561966890140 is 410986691657.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14542243760 + ... + 14542244279.

It is an arithmetic number, because the mean of its divisors is an integer number (712569956980).

Almost surely, 2^{7561966890140} is an apocalyptic number.

It is an amenable number.

7561966890140 is an abundant number, since it is smaller than the sum of its proper divisors (9539712077380).

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

7561966890140 is a wasteful number, since it uses less digits than its factorization.

7561966890140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29084488061 (or 29084488059 counting only the distinct ones).

The product of its (nonzero) digits is 19595520, while the sum is 62.

The spelling of 7561966890140 in words is "seven trillion, five hundred sixty-one billion, nine hundred sixty-six million, eight hundred ninety thousand, one hundred forty".