1377664578893 has 16 divisors (see below), whose sum is σ = 1474649457600. Its totient is φ = 1283310138240.

The previous prime is 1377664578863. The next prime is 1377664578947. The reversal of 1377664578893 is 3988754667731.

It is a cyclic number.

It is not a de Polignac number, because 1377664578893 - 2²⁰ = 1377663530317 is a prime.

It is a super-2 number, since 2×1377664578893² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1377664578893.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1377664578833) 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, 2267696 + ... + 2810297.

It is an arithmetic number, because the mean of its divisors is an integer number (92165591100).

Almost surely, 2^{1377664578893} is an apocalyptic number.

It is an amenable number.

1377664578893 is a deficient number, since it is larger than the sum of its proper divisors (96984878707).

1377664578893 is a wasteful number, since it uses less digits than its factorization.

1377664578893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5078252.

The product of its digits is 1280240640, while the sum is 74.

The spelling of 1377664578893 in words is "one trillion, three hundred seventy-seven billion, six hundred sixty-four million, five hundred seventy-eight thousand, eight hundred ninety-three".