3123445350640 has 40 divisors (see below), whose sum is σ = 7644221519760. Its totient is φ = 1183621395456.

The previous prime is 3123445350611. The next prime is 3123445350643. The reversal of 3123445350640 is 460535443213.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 3123445350593 and 3123445350602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3123445350643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1027447609 + ... + 1027450648.

It is an arithmetic number, because the mean of its divisors is an integer number (191105537994).

Almost surely, 2^{3123445350640} is an apocalyptic number.

It is an amenable number.

3123445350640 is an abundant number, since it is smaller than the sum of its proper divisors (4520776169120).

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

3123445350640 is a wasteful number, since it uses less digits than its factorization.

3123445350640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2054898289 (or 2054898283 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 40.

The spelling of 3123445350640 in words is "three trillion, one hundred twenty-three billion, four hundred forty-five million, three hundred fifty thousand, six hundred forty".