135404823040660 has 12 divisors (see below), whose sum is σ = 284350128385428. Its totient is φ = 54161929216256.

The previous prime is 135404823040631. The next prime is 135404823040667. The reversal of 135404823040660 is 66040328404531.

It can be written as a sum of positive squares in 2 ways, for example, as 80395396457104 + 55009426583556 = 8966348^2 + 7416834^2 .

It is a super-2 number, since 2×135404823040660² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 135404823040660.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135404823040667) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3385120575997 + ... + 3385120576036.

It is an arithmetic number, because the mean of its divisors is an integer number (23695844032119).

Almost surely, 2^{135404823040660} is an apocalyptic number.

135404823040660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

135404823040660 is an abundant number, since it is smaller than the sum of its proper divisors (148945305344768).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

135404823040660 is a wasteful number, since it uses less digits than its factorization.

135404823040660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6770241152042 (or 6770241152040 counting only the distinct ones).

The product of its (nonzero) digits is 1658880, while the sum is 46.

The spelling of 135404823040660 in words is "one hundred thirty-five trillion, four hundred four billion, eight hundred twenty-three million, forty thousand, six hundred sixty".