1377213547205 has 16 divisors (see below), whose sum is σ = 1680827889600. Its totient is φ = 1082993316480.

The previous prime is 1377213547201. The next prime is 1377213547223. The reversal of 1377213547205 is 5027453127731.

It is not a de Polignac number, because 1377213547205 - 2² = 1377213547201 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1377213547205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1377213547201) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2947490 + ... + 3382620.

It is an arithmetic number, because the mean of its divisors is an integer number (105051743100).

Almost surely, 2^{1377213547205} is an apocalyptic number.

It is an amenable number.

1377213547205 is a deficient number, since it is larger than the sum of its proper divisors (303614342395).

1377213547205 is a wasteful number, since it uses less digits than its factorization.

1377213547205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 445924.

The product of its (nonzero) digits is 1234800, while the sum is 47.

The spelling of 1377213547205 in words is "one trillion, three hundred seventy-seven billion, two hundred thirteen million, five hundred forty-seven thousand, two hundred five".