1387638264377 has 8 divisors (see below), whose sum is σ = 1430921346816. Its totient is φ = 1344928468032.

The previous prime is 1387638264347. The next prime is 1387638264379. The reversal of 1387638264377 is 7734628367831.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1387638264377 - 2²² = 1387634070073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1387638264379) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 143316608 + ... + 143326289.

It is an arithmetic number, because the mean of its divisors is an integer number (178865168352).

Almost surely, 2^{1387638264377} is an apocalyptic number.

It is an amenable number.

1387638264377 is a deficient number, since it is larger than the sum of its proper divisors (43283082439).

1387638264377 is a wasteful number, since it uses less digits than its factorization.

1387638264377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 286643047.

The product of its digits is 170698752, while the sum is 65.

The spelling of 1387638264377 in words is "one trillion, three hundred eighty-seven billion, six hundred thirty-eight million, two hundred sixty-four thousand, three hundred seventy-seven".