1381577906559 has 16 divisors (see below), whose sum is σ = 2023363526400. Its totient is φ = 834637453056.

The previous prime is 1381577906519. The next prime is 1381577906573. The reversal of 1381577906559 is 9556097751831.

It is a happy number.

It is not a de Polignac number, because 1381577906559 - 2³⁷ = 1244138953087 is a prime.

It is a super-3 number, since 3×1381577906559³ (a number of 37 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1381577906559.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1381577906509) 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, 526916274 + ... + 526918895.

It is an arithmetic number, because the mean of its divisors is an integer number (126460220400).

Almost surely, 2^{1381577906559} is an apocalyptic number.

1381577906559 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

1381577906559 is a deficient number, since it is larger than the sum of its proper divisors (641785619841).

1381577906559 is a wasteful number, since it uses less digits than its factorization.

1381577906559 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1053835214.

The product of its (nonzero) digits is 71442000, while the sum is 66.

The spelling of 1381577906559 in words is "one trillion, three hundred eighty-one billion, five hundred seventy-seven million, nine hundred six thousand, five hundred fifty-nine".