1365131661560 has 64 divisors (see below), whose sum is σ = 3126028762080. Its totient is φ = 536426496000.

The previous prime is 1365131661469. The next prime is 1365131661577. The reversal of 1365131661560 is 651661315631.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 198377 + ... + 1664216.

Almost surely, 2^{1365131661560} is an apocalyptic number.

1365131661560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1365131661560 is an abundant number, since it is smaller than the sum of its proper divisors (1760897100520).

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

1365131661560 is a wasteful number, since it uses less digits than its factorization.

1365131661560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1862928 (or 1862924 counting only the distinct ones).

The product of its (nonzero) digits is 291600, while the sum is 44.

The spelling of 1365131661560 in words is "one trillion, three hundred sixty-five billion, one hundred thirty-one million, six hundred sixty-one thousand, five hundred sixty".