1320640310050 has 96 divisors (see below), whose sum is σ = 2551149216000. Its totient is φ = 508275855360.

The previous prime is 1320640310039. The next prime is 1320640310069. The reversal of 1320640310050 is 500130460231.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a junction number, because it is equal to n+sod(n) for n = 1320640309997 and 1320640310024.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 76253992 + ... + 76271308.

It is an arithmetic number, because the mean of its divisors is an integer number (26574471000).

Almost surely, 2^{1320640310050} is an apocalyptic number.

1320640310050 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1320640310050 is a deficient number, since it is larger than the sum of its proper divisors (1230508905950).

1320640310050 is a wasteful number, since it uses less digits than its factorization.

1320640310050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17900 (or 17895 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 25.

Adding to 1320640310050 its reverse (500130460231), we get a palindrome (1820770770281).

The spelling of 1320640310050 in words is "one trillion, three hundred twenty billion, six hundred forty million, three hundred ten thousand, fifty".