135576092978 has 4 divisors (see below), whose sum is σ = 203364139470. Its totient is φ = 67788046488.

The previous prime is 135576092963. The next prime is 135576092987. The reversal of 135576092978 is 879290675531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 879290675531 = 73 ⋅12045077747.

It can be written as a sum of positive squares in only one way, i.e., 123863875249 + 11712217729 = 351943^2 + 108223^2 .

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 135576092978.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33894023243 + ... + 33894023246.

Almost surely, 2^135576092978 is an apocalyptic number.

135576092978 is a deficient number, since it is larger than the sum of its proper divisors (67788046492).

135576092978 is an equidigital number, since it uses as much as digits as its factorization.

135576092978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67788046491.

The product of its (nonzero) digits is 28576800, while the sum is 62.

The spelling of 135576092978 in words is "one hundred thirty-five billion, five hundred seventy-six million, ninety-two thousand, nine hundred seventy-eight".