1361487077840 has 40 divisors (see below), whose sum is σ = 3165843007008. Its totient is φ = 544528499840.

The previous prime is 1361487077831. The next prime is 1361487077851. The reversal of 1361487077840 is 487707841631.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 372866 + ... + 1691745.

Almost surely, 2^{1361487077840} is an apocalyptic number.

1361487077840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1361487077840 is an abundant number, since it is smaller than the sum of its proper divisors (1804355929168).

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

1361487077840 is a wasteful number, since it uses less digits than its factorization.

1361487077840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2072867 (or 2072861 counting only the distinct ones).

The product of its (nonzero) digits is 6322176, while the sum is 56.

The spelling of 1361487077840 in words is "one trillion, three hundred sixty-one billion, four hundred eighty-seven million, seventy-seven thousand, eight hundred forty".