1359638721069 has 32 divisors (see below), whose sum is σ = 1933390356480. Its totient is φ = 847922836992.

The previous prime is 1359638721029. The next prime is 1359638721079. The reversal of 1359638721069 is 9601278369531.

It is not a de Polignac number, because 1359638721069 - 2¹⁶ = 1359638655533 is a prime.

It is a super-2 number, since 2×1359638721069² (a number of 25 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1359638721019) 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, 4118589 + ... + 4436445.

It is an arithmetic number, because the mean of its divisors is an integer number (60418448640).

Almost surely, 2^{1359638721069} is an apocalyptic number.

It is an amenable number.

1359638721069 is a deficient number, since it is larger than the sum of its proper divisors (573751635411).

1359638721069 is a wasteful number, since it uses less digits than its factorization.

1359638721069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 319249.

The product of its (nonzero) digits is 14696640, while the sum is 60.

The spelling of 1359638721069 in words is "one trillion, three hundred fifty-nine billion, six hundred thirty-eight million, seven hundred twenty-one thousand, sixty-nine".