9249749641640 has 16 divisors (see below), whose sum is σ = 20811936693780. Its totient is φ = 3699899856640.

The previous prime is 9249749641621. The next prime is 9249749641651. The reversal of 9249749641640 is 461469479429.

It can be written as a sum of positive squares in 2 ways, for example, as 9248666310244 + 1083331396 = 3041162^2 + 32914^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 115621870481 + ... + 115621870560.

Almost surely, 2^{9249749641640} is an apocalyptic number.

It is an amenable number.

9249749641640 is an abundant number, since it is smaller than the sum of its proper divisors (11562187052140).

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

9249749641640 is a wasteful number, since it uses less digits than its factorization.

9249749641640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231243741052 (or 231243741048 counting only the distinct ones).

The product of its (nonzero) digits is 94058496, while the sum is 65.

The spelling of 9249749641640 in words is "nine trillion, two hundred forty-nine billion, seven hundred forty-nine million, six hundred forty-one thousand, six hundred forty".