1387500763757 has 4 divisors (see below), whose sum is σ = 1387589898780. Its totient is φ = 1387411628736.

The previous prime is 1387500763679. The next prime is 1387500763771. The reversal of 1387500763757 is 7573670057831.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 585062831236 + 802437932521 = 764894^2 + 895789^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1387500763757 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1387500763696 and 1387500763705.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1387500763777) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44544158 + ... + 44575295.

It is an arithmetic number, because the mean of its divisors is an integer number (346897474695).

Almost surely, 2^{1387500763757} is an apocalyptic number.

It is an amenable number.

1387500763757 is a deficient number, since it is larger than the sum of its proper divisors (89135023).

1387500763757 is an equidigital number, since it uses as much as digits as its factorization.

1387500763757 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89135022.

The product of its (nonzero) digits is 25930800, while the sum is 59.

The spelling of 1387500763757 in words is "one trillion, three hundred eighty-seven billion, five hundred million, seven hundred sixty-three thousand, seven hundred fifty-seven".