1361253667650 has 48 divisors (see below), whose sum is σ = 3376842243264. Its totient is φ = 362900639680.

The previous prime is 1361253667643. The next prime is 1361253667687. The reversal of 1361253667650 is 567663521631.

It is a junction number, because it is equal to n+sod(n) for n = 1361253667593 and 1361253667602.

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, 708969 + ... + 1795868.

It is an arithmetic number, because the mean of its divisors is an integer number (70350880068).

Almost surely, 2^{1361253667650} is an apocalyptic number.

1361253667650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1361253667650 is an abundant number, since it is smaller than the sum of its proper divisors (2015588575614).

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

1361253667650 is a wasteful number, since it uses less digits than its factorization.

1361253667650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2508475 (or 2508470 counting only the distinct ones).

The product of its (nonzero) digits is 4082400, while the sum is 51.

The spelling of 1361253667650 in words is "one trillion, three hundred sixty-one billion, two hundred fifty-three million, six hundred sixty-seven thousand, six hundred fifty".