135570508477 has 4 divisors (see below), whose sum is σ = 135640645180. Its totient is φ = 135500371776.

The previous prime is 135570508457. The next prime is 135570508559. The reversal of 135570508477 is 774805075531.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 87982831161 + 47587677316 = 296619^2 + 218146^2 .

It is a cyclic number.

It is not a de Polignac number, because 135570508477 - 2⁷ = 135570508349 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135570508457) 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, 35065452 + ... + 35069317.

It is an arithmetic number, because the mean of its divisors is an integer number (33910161295).

Almost surely, 2^135570508477 is an apocalyptic number.

It is an amenable number.

135570508477 is a deficient number, since it is larger than the sum of its proper divisors (70136703).

135570508477 is an equidigital number, since it uses as much as digits as its factorization.

135570508477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70136702.

The product of its (nonzero) digits is 4116000, while the sum is 52.

The spelling of 135570508477 in words is "one hundred thirty-five billion, five hundred seventy million, five hundred eight thousand, four hundred seventy-seven".