136145680478 has 4 divisors (see below), whose sum is σ = 204218520720. Its totient is φ = 68072840238.

The previous prime is 136145680477. The next prime is 136145680493. The reversal of 136145680478 is 874086541631.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136145680477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34036420118 + ... + 34036420121.

It is an arithmetic number, because the mean of its divisors is an integer number (51054630180).

Almost surely, 2^136145680478 is an apocalyptic number.

136145680478 is a deficient number, since it is larger than the sum of its proper divisors (68072840242).

136145680478 is an equidigital number, since it uses as much as digits as its factorization.

136145680478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68072840241.

The product of its (nonzero) digits is 3870720, while the sum is 53.

The spelling of 136145680478 in words is "one hundred thirty-six billion, one hundred forty-five million, six hundred eighty thousand, four hundred seventy-eight".