9940130904640 has 56 divisors (see below), whose sum is σ = 23671508283000. Its totient is φ = 3975788371968.

The previous prime is 9940130904637. The next prime is 9940130904643. The reversal of 9940130904640 is 464090310499.

It is an interprime number because it is at equal distance from previous prime (9940130904637) and next prime (9940130904643).

It can be written as a sum of positive squares in 4 ways, for example, as 4975719119424 + 4964411785216 = 2230632^2 + 2228096^2 .

It is not an unprimeable number, because it can be changed into a prime (9940130904643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3831736 + ... + 5878984.

Almost surely, 2^{9940130904640} is an apocalyptic number.

It is an amenable number.

9940130904640 is an abundant number, since it is smaller than the sum of its proper divisors (13731377378360).

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

9940130904640 is a wasteful number, since it uses less digits than its factorization.

9940130904640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2062439 (or 2062429 counting only the distinct ones).

The product of its (nonzero) digits is 839808, while the sum is 49.

The spelling of 9940130904640 in words is "nine trillion, nine hundred forty billion, one hundred thirty million, nine hundred four thousand, six hundred forty".