61608957297 has 8 divisors (see below), whose sum is σ = 82150695840. Its totient is φ = 41069928480.

The previous prime is 61608957283. The next prime is 61608957323. The reversal of 61608957297 is 79275980616.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 61608957297 - 2¹⁰ = 61608956273 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 61608957297.

It is not an unprimeable number, because it can be changed into a prime (61608957247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 623772 + ... + 715757.

It is an arithmetic number, because the mean of its divisors is an integer number (10268836980).

Almost surely, 2^61608957297 is an apocalyptic number.

It is an amenable number.

61608957297 is a deficient number, since it is larger than the sum of its proper divisors (20541738543).

61608957297 is a wasteful number, since it uses less digits than its factorization.

61608957297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1354863.

The product of its (nonzero) digits is 11430720, while the sum is 60.

The spelling of 61608957297 in words is "sixty-one billion, six hundred eight million, nine hundred fifty-seven thousand, two hundred ninety-seven".