1378650028650 has 48 divisors (see below), whose sum is σ = 3419124534048. Its totient is φ = 367632216000.

The previous prime is 1378650028597. The next prime is 1378650028697. The reversal of 1378650028650 is 568200568731.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1378650028593 and 1378650028602.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11975865 + ... + 12090435.

It is an arithmetic number, because the mean of its divisors is an integer number (71231761126).

Almost surely, 2^{1378650028650} is an apocalyptic number.

1378650028650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1378650028650 is an abundant number, since it is smaller than the sum of its proper divisors (2040474505398).

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

1378650028650 is a wasteful number, since it uses less digits than its factorization.

1378650028650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194807 (or 194802 counting only the distinct ones).

The product of its (nonzero) digits is 2419200, while the sum is 51.

The spelling of 1378650028650 in words is "one trillion, three hundred seventy-eight billion, six hundred fifty million, twenty-eight thousand, six hundred fifty".