1361777321504 has 24 divisors (see below), whose sum is σ = 2681853937308. Its totient is φ = 680671559680.

The previous prime is 1361777321479. The next prime is 1361777321519. The reversal of 1361777321504 is 4051237771631.

It can be written as a sum of positive squares in 2 ways, for example, as 1359210885904 + 2566435600 = 1165852^2 + 50660^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6682457 + ... + 6883224.

Almost surely, 2^{1361777321504} is an apocalyptic number.

It is an amenable number.

1361777321504 is a deficient number, since it is larger than the sum of its proper divisors (1320076615804).

1361777321504 is a wasteful number, since it uses less digits than its factorization.

1361777321504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13568828 (or 13568820 counting only the distinct ones).

The product of its (nonzero) digits is 740880, while the sum is 47.

The spelling of 1361777321504 in words is "one trillion, three hundred sixty-one billion, seven hundred seventy-seven million, three hundred twenty-one thousand, five hundred four".