1361201711557 has 8 divisors (see below), whose sum is σ = 1363038723200. Its totient is φ = 1359364875264.

The previous prime is 1361201711501. The next prime is 1361201711563. The reversal of 1361201711557 is 7551171021631.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1361201711557 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1361201711587) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25032244 + ... + 25086562.

It is an arithmetic number, because the mean of its divisors is an integer number (170379840400).

Almost surely, 2^{1361201711557} is an apocalyptic number.

It is an amenable number.

1361201711557 is a deficient number, since it is larger than the sum of its proper divisors (1837011643).

1361201711557 is an equidigital number, since it uses as much as digits as its factorization.

1361201711557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87675.

The product of its (nonzero) digits is 44100, while the sum is 40.

The spelling of 1361201711557 in words is "one trillion, three hundred sixty-one billion, two hundred one million, seven hundred eleven thousand, five hundred fifty-seven".