134691245578 has 4 divisors (see below), whose sum is σ = 202036868370. Its totient is φ = 67345622788.

The previous prime is 134691245567. The next prime is 134691245597. The reversal of 134691245578 is 875542196431.

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

It can be written as a sum of positive squares in only one way, i.e., 113908275009 + 20782970569 = 337503^2 + 144163^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33672811393 + ... + 33672811396.

Almost surely, 2^134691245578 is an apocalyptic number.

134691245578 is a deficient number, since it is larger than the sum of its proper divisors (67345622792).

134691245578 is an equidigital number, since it uses as much as digits as its factorization.

134691245578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67345622791.

The product of its digits is 7257600, while the sum is 55.

The spelling of 134691245578 in words is "one hundred thirty-four billion, six hundred ninety-one million, two hundred forty-five thousand, five hundred seventy-eight".