1387511881741 has 2 divisors, whose sum is σ = 1387511881742. Its totient is φ = 1387511881740.

The previous prime is 1387511881667. The next prime is 1387511881837. The reversal of 1387511881741 is 1471881157831.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1182079945225 + 205431936516 = 1087235^2 + 453246^2 .

It is a cyclic number.

It is not a de Polignac number, because 1387511881741 - 2¹³ = 1387511873549 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1387511881141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 693755940870 + 693755940871.

It is an arithmetic number, because the mean of its divisors is an integer number (693755940871).

Almost surely, 2^{1387511881741} is an apocalyptic number.

It is an amenable number.

1387511881741 is a deficient number, since it is larger than the sum of its proper divisors (1).

1387511881741 is an equidigital number, since it uses as much as digits as its factorization.

1387511881741 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1505280, while the sum is 55.

The spelling of 1387511881741 in words is "one trillion, three hundred eighty-seven billion, five hundred eleven million, eight hundred eighty-one thousand, seven hundred forty-one".