134575783947 has 24 divisors (see below), whose sum is σ = 212071577328. Its totient is φ = 81556171200.

The previous prime is 134575783919. The next prime is 134575783957. The reversal of 134575783947 is 749387575431.

134575783947 is a `hidden beast` number, since 1 + 3 + 4 + 57 + 578 + 3 + 9 + 4 + 7 = 666.

It is not a de Polignac number, because 134575783947 - 2⁶ = 134575783883 is a prime.

It is a super-2 number, since 2×134575783947² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (134575783957) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2264797 + ... + 2323457.

It is an arithmetic number, because the mean of its divisors is an integer number (8836315722).

Almost surely, 2^134575783947 is an apocalyptic number.

134575783947 is a deficient number, since it is larger than the sum of its proper divisors (77495793381).

134575783947 is a wasteful number, since it uses less digits than its factorization.

134575783947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81851 (or 81848 counting only the distinct ones).

The product of its digits is 88905600, while the sum is 63.

The spelling of 134575783947 in words is "one hundred thirty-four billion, five hundred seventy-five million, seven hundred eighty-three thousand, nine hundred forty-seven".