1361779406450 has 48 divisors (see below), whose sum is σ = 2638604094720. Its totient is φ = 522304200000.

The previous prime is 1361779406447. The next prime is 1361779406453. The reversal of 1361779406450 is 546049771631.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1361779406447) and next prime (1361779406453).

It is a junction number, because it is equal to n+sod(n) for n = 1361779406392 and 1361779406401.

It is not an unprimeable number, because it can be changed into a prime (1361779406453) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3861176 + ... + 4199075.

It is an arithmetic number, because the mean of its divisors is an integer number (54970918640).

Almost surely, 2^{1361779406450} is an apocalyptic number.

1361779406450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1361779406450 is a deficient number, since it is larger than the sum of its proper divisors (1276824688270).

1361779406450 is a wasteful number, since it uses less digits than its factorization.

1361779406450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8060403 (or 8060398 counting only the distinct ones).

The product of its (nonzero) digits is 3810240, while the sum is 53.

The spelling of 1361779406450 in words is "one trillion, three hundred sixty-one billion, seven hundred seventy-nine million, four hundred six thousand, four hundred fifty".