997274725355 has 4 divisors (see below), whose sum is σ = 1196729670432. Its totient is φ = 797819780280.

The previous prime is 997274725351. The next prime is 997274725439. The reversal of 997274725355 is 553527472799.

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

It is not a de Polignac number, because 997274725355 - 2² = 997274725351 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 997274725291 and 997274725300.

It is not an unprimeable number, because it can be changed into a prime (997274725351) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 99727472531 + ... + 99727472540.

It is an arithmetic number, because the mean of its divisors is an integer number (299182417608).

Almost surely, 2^997274725355 is an apocalyptic number.

997274725355 is a deficient number, since it is larger than the sum of its proper divisors (199454945077).

997274725355 is a wasteful number, since it uses less digits than its factorization.

997274725355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199454945076.

The product of its digits is 166698000, while the sum is 65.

The spelling of 997274725355 in words is "nine hundred ninety-seven billion, two hundred seventy-four million, seven hundred twenty-five thousand, three hundred fifty-five".