135420545737 has 8 divisors (see below), whose sum is σ = 137356831304. Its totient is φ = 133486455168.

The previous prime is 135420545719. The next prime is 135420545749. The reversal of 135420545737 is 737545024531.

It can be written as a sum of positive squares in 4 ways, for example, as 8815519881 + 126605025856 = 93891^2 + 355816^2 .

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 135420545737 - 2¹⁹ = 135420021449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135421545737) 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, 424278 + ... + 671455.

It is an arithmetic number, because the mean of its divisors is an integer number (17169603913).

Almost surely, 2^135420545737 is an apocalyptic number.

It is an amenable number.

135420545737 is a deficient number, since it is larger than the sum of its proper divisors (1936285567).

135420545737 is a wasteful number, since it uses less digits than its factorization.

135420545737 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1097499.

The product of its (nonzero) digits is 1764000, while the sum is 46.

The spelling of 135420545737 in words is "one hundred thirty-five billion, four hundred twenty million, five hundred forty-five thousand, seven hundred thirty-seven".