1354939881653 has 8 divisors (see below), whose sum is σ = 1377070781880. Its totient is φ = 1332979876800.

The previous prime is 1354939881641. The next prime is 1354939881661. The reversal of 1354939881653 is 3561889394531.

It can be written as a sum of positive squares in 4 ways, for example, as 330386992849 + 1024552888804 = 574793^2 + 1012202^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1354939881653 - 2¹⁴ = 1354939865269 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1354939881653.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1354939881683) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42707858 + ... + 42739571.

It is an arithmetic number, because the mean of its divisors is an integer number (172133847735).

Almost surely, 2^{1354939881653} is an apocalyptic number.

It is an amenable number.

1354939881653 is a deficient number, since it is larger than the sum of its proper divisors (22130900227).

1354939881653 is a wasteful number, since it uses less digits than its factorization.

1354939881653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85447687.

The product of its digits is 83980800, while the sum is 65.

The spelling of 1354939881653 in words is "one trillion, three hundred fifty-four billion, nine hundred thirty-nine million, eight hundred eighty-one thousand, six hundred fifty-three".