1377406263647 has 4 divisors (see below), whose sum is σ = 1377409173816. Its totient is φ = 1377403353480.

The previous prime is 1377406263613. The next prime is 1377406263659. The reversal of 1377406263647 is 7463626047731.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1377406263647 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1377406263592 and 1377406263601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1377406263047) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 562688 + ... + 1752549.

It is an arithmetic number, because the mean of its divisors is an integer number (344352293454).

Almost surely, 2^{1377406263647} is an apocalyptic number.

1377406263647 is a deficient number, since it is larger than the sum of its proper divisors (2910169).

1377406263647 is an equidigital number, since it uses as much as digits as its factorization.

1377406263647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2910168.

The product of its (nonzero) digits is 21337344, while the sum is 56.

The spelling of 1377406263647 in words is "one trillion, three hundred seventy-seven billion, four hundred six million, two hundred sixty-three thousand, six hundred forty-seven".