1376863706987 has 32 divisors (see below), whose sum is σ = 1432992971520. Its totient is φ = 1322065704960.

The previous prime is 1376863706951. The next prime is 1376863706989. The reversal of 1376863706987 is 7896073686731.

It is a cyclic number.

It is not a de Polignac number, because 1376863706987 - 2³⁴ = 1359683837803 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1376863706987.

It is not an unprimeable number, because it can be changed into a prime (1376863706989) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 434477339 + ... + 434480507.

It is an arithmetic number, because the mean of its divisors is an integer number (44781030360).

Almost surely, 2^{1376863706987} is an apocalyptic number.

1376863706987 is a deficient number, since it is larger than the sum of its proper divisors (56129264533).

1376863706987 is a wasteful number, since it uses less digits than its factorization.

1376863706987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4043.

The product of its (nonzero) digits is 384072192, while the sum is 71.

The spelling of 1376863706987 in words is "one trillion, three hundred seventy-six billion, eight hundred sixty-three million, seven hundred six thousand, nine hundred eighty-seven".