7801040144 has 20 divisors (see below), whose sum is σ = 15362296140. Its totient is φ = 3836576640.

The previous prime is 7801040141. The next prime is 7801040173. The reversal of 7801040144 is 4410401087.

It can be written as a sum of positive squares in 2 ways, for example, as 3883782400 + 3917257744 = 62320^2 + 62588^2 .

It is not an unprimeable number, because it can be changed into a prime (7801040141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3995459 + ... + 3997410.

It is an arithmetic number, because the mean of its divisors is an integer number (768114807).

Almost surely, 2^7801040144 is an apocalyptic number.

It is an amenable number.

7801040144 is a deficient number, since it is larger than the sum of its proper divisors (7561255996).

7801040144 is a wasteful number, since it uses less digits than its factorization.

7801040144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7992938 (or 7992932 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 29.

The square root of 7801040144 is about 88323.4971227929. The cubic root of 7801040144 is about 1983.2806328549.

The spelling of 7801040144 in words is "seven billion, eight hundred one million, forty thousand, one hundred forty-four".