1361777275744 has 72 divisors (see below), whose sum is σ = 2853256423248. Its totient is φ = 639649474560.

The previous prime is 1361777275711. The next prime is 1361777275757. The reversal of 1361777275744 is 4475727771631.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4867077 + ... + 5139259.

It is an arithmetic number, because the mean of its divisors is an integer number (39628561434).

Almost surely, 2^{1361777275744} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1361777275744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1426628211624).

1361777275744 is an abundant number, since it is smaller than the sum of its proper divisors (1491479147504).

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

1361777275744 is a wasteful number, since it uses less digits than its factorization.

1361777275744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272768 (or 272743 counting only the distinct ones).

The product of its digits is 48404160, while the sum is 61.

The spelling of 1361777275744 in words is "one trillion, three hundred sixty-one billion, seven hundred seventy-seven million, two hundred seventy-five thousand, seven hundred forty-four".