1376383432645 has 16 divisors (see below), whose sum is σ = 1778932013040. Its totient is φ = 1016279875584.

The previous prime is 1376383432607. The next prime is 1376383432649. The reversal of 1376383432645 is 5462343836731.

It can be written as a sum of positive squares in 8 ways, for example, as 598175402724 + 778208029921 = 773418^2 + 882161^2 .

It is a cyclic number.

It is not a de Polignac number, because 1376383432645 - 2²⁷ = 1376249214917 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1376383432649) 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, 787644 + ... + 1836613.

It is an arithmetic number, because the mean of its divisors is an integer number (111183250815).

Almost surely, 2^{1376383432645} is an apocalyptic number.

It is an amenable number.

1376383432645 is a deficient number, since it is larger than the sum of its proper divisors (402548580395).

1376383432645 is a wasteful number, since it uses less digits than its factorization.

1376383432645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2632344.

The product of its digits is 26127360, while the sum is 55.

The spelling of 1376383432645 in words is "one trillion, three hundred seventy-six billion, three hundred eighty-three million, four hundred thirty-two thousand, six hundred forty-five".