274505720729678 has 4 divisors (see below), whose sum is σ = 411758581094520. Its totient is φ = 137252860364838.

The previous prime is 274505720729657. The next prime is 274505720729683. The reversal of 274505720729678 is 876927027505472.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68626430182418 + ... + 68626430182421.

It is an arithmetic number, because the mean of its divisors is an integer number (102939645273630).

Almost surely, 2^{274505720729678} is an apocalyptic number.

274505720729678 is a deficient number, since it is larger than the sum of its proper divisors (137252860364842).

274505720729678 is a wasteful number, since it uses less digits than its factorization.

274505720729678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137252860364841.

The product of its (nonzero) digits is 829785600, while the sum is 71.

The spelling of 274505720729678 in words is "two hundred seventy-four trillion, five hundred five billion, seven hundred twenty million, seven hundred twenty-nine thousand, six hundred seventy-eight".